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<?php
/**
* Copyright (c) 2015 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 OCA\Files_Sharing\Propagation;
use OC\Files\Cache\ChangePropagator;
use OC\Files\View;
use OC\Share\Share;
/**
* Propagate etags for share recipients
*/
class RecipientPropagator {
/**
* @var string
*/
protected $userId;
/**
* @var \OC\Files\Cache\ChangePropagator
*/
protected $changePropagator;
/**
* @var \OCP\IConfig
*/
protected $config;
/**
* @param string $userId current user, must match the propagator's
* user
* @param \OC\Files\Cache\ChangePropagator $changePropagator change propagator
* initialized with a view for $user
* @param \OCP\IConfig $config
*/
public function __construct($userId, $changePropagator, $config) {
$this->userId = $userId;
$this->changePropagator = $changePropagator;
$this->config = $config;
}
/**
* Propagate the etag changes for all shares marked as dirty and mark the shares as clean
*
* @param array $shares the shares for the users
* @param int $time
*/
public function propagateDirtyMountPoints(array $shares, $time = null) {
if ($time === null) {
$time = microtime(true);
}
$dirtyShares = $this->getDirtyShares($shares);
foreach ($dirtyShares as $share) {
$this->changePropagator->addChange($share['file_target']);
}
if (count($dirtyShares)) {
$this->config->setUserValue($this->userId, 'files_sharing', 'last_propagate', $time);
$this->changePropagator->propagateChanges(floor($time));
}
}
/**
* Get all shares we need to update the etag for
*
* @param array $shares the shares for the users
* @return string[]
*/
protected function getDirtyShares($shares) {
$dirty = [];
$userTime = $this->config->getUserValue($this->userId, 'files_sharing', 'last_propagate', 0);
foreach ($shares as $share) {
$updateTime = $this->config->getAppValue('files_sharing', $share['id'], 0);
if ($updateTime >= $userTime) {
$dirty[] = $share;
}
}
return $dirty;
}
/**
* @param array $share
* @param int $time
*/
public function markDirty($share, $time = null) {
if ($time === null) {
$time = microtime(true);
}
$this->config->setAppValue('files_sharing', $share['id'], $time);
}
/**
* Listen on the propagator for updates made to shares owned by a user
*
* @param \OC\Files\Cache\ChangePropagator $propagator
* @param string $owner
*/
public function attachToPropagator(ChangePropagator $propagator, $owner) {
$propagator->listen('\OC\Files', 'propagate', function ($path, $entry) use ($owner) {
$shares = Share::getAllSharesForFileId($entry['fileid']);
foreach ($shares as $share) {
// propagate down the share tree
$this->markDirty($share, microtime(true));
// propagate up the share tree
$user = $share['uid_owner'];
$view = new View('/' . $user . '/files');
$path = $view->getPath($share['file_source']);
$watcher = new ChangeWatcher($view);
$watcher->writeHook(['path' => $path]);
}
});
}
}
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