/**
* @brief rename/move versions of renamed/moved files
* @param array with oldpath and newpath
*
* This function is connected to the rename signal of OC_Filesystem and adjust the name and location
* of the stored versions along the actual file
*/
public static function rename_hook($params)
{
$versions_fileview = \OCP\Files::getStorage('files_versions');
$rel_oldpath = $params['oldpath'];
$abs_oldpath = \OCP\Config::getSystemValue('datadirectory') . $versions_fileview->getAbsolutePath('') . $rel_oldpath . '.v';
$abs_newpath = \OCP\Config::getSystemValue('datadirectory') . $versions_fileview->getAbsolutePath('') . $params['newpath'] . '.v';
if (Storage::isversioned($rel_oldpath)) {
$info = pathinfo($abs_newpath);
if (!file_exists($info['dirname'])) {
mkdir($info['dirname'], 0750, true);
}
$versions = Storage::getVersions($rel_oldpath);
foreach ($versions as $v) {
rename($abs_oldpath . $v['version'], $abs_newpath . $v['version']);
}
}
}
/**
* @brief Erase a file's versions which exceed the set quota
*/
private static function expire($filename, $versionsSize = null, $offset = 0)
{
if (\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED) == 'true') {
list($uid, $filename) = self::getUidAndFilename($filename);
$versionsFileview = new \OC\Files\View('/' . $uid . '/files_versions');
// get available disk space for user
$softQuota = true;
$quota = \OC_Preferences::getValue($uid, 'files', 'quota');
if ($quota === null || $quota === 'default') {
$quota = \OC_Appconfig::getValue('files', 'default_quota');
}
if ($quota === null || $quota === 'none') {
$quota = \OC\Files\Filesystem::free_space('/');
$softQuota = false;
} else {
$quota = \OCP\Util::computerFileSize($quota);
}
// make sure that we have the current size of the version history
if ($versionsSize === null) {
$versionsSize = self::getVersionsSize($uid);
if ($versionsSize === false || $versionsSize < 0) {
$versionsSize = self::calculateSize($uid);
}
}
// calculate available space for version history
// subtract size of files and current versions size from quota
if ($softQuota) {
$files_view = new \OC\Files\View('/' . $uid . '/files');
$rootInfo = $files_view->getFileInfo('/');
$free = $quota - $rootInfo['size'];
// remaining free space for user
if ($free > 0) {
$availableSpace = $free * self::DEFAULTMAXSIZE / 100 - ($versionsSize + $offset);
// how much space can be used for versions
} else {
$availableSpace = $free - $versionsSize - $offset;
}
} else {
$availableSpace = $quota - $offset;
}
// with the probability of 0.1% we reduce the number of all versions not only for the current file
$random = rand(0, 1000);
if ($random == 0) {
$allFiles = true;
} else {
$allFiles = false;
}
$allVersions = Storage::getVersions($uid, $filename);
$versionsByFile[$filename] = $allVersions;
$sizeOfDeletedVersions = self::delOldVersions($versionsByFile, $allVersions, $versionsFileview);
$availableSpace = $availableSpace + $sizeOfDeletedVersions;
$versionsSize = $versionsSize - $sizeOfDeletedVersions;
// if still not enough free space we rearrange the versions from all files
if ($availableSpace <= 0 || $allFiles) {
$result = Storage::getAllVersions($uid);
$versionsByFile = $result['by_file'];
$allVersions = $result['all'];
$sizeOfDeletedVersions = self::delOldVersions($versionsByFile, $allVersions, $versionsFileview);
$availableSpace = $availableSpace + $sizeOfDeletedVersions;
$versionsSize = $versionsSize - $sizeOfDeletedVersions;
}
// Check if enough space is available after versions are rearranged.
// If not we delete the oldest versions until we meet the size limit for versions,
// but always keep the two latest versions
$numOfVersions = count($allVersions) - 2;
$i = 0;
while ($availableSpace < 0 && $i < $numOfVersions) {
$version = current($allVersions);
$versionsFileview->unlink($version['path'] . '.v' . $version['version']);
$versionsSize -= $version['size'];
$availableSpace += $version['size'];
next($allVersions);
$i++;
}
return $versionsSize;
// finally return the new size of the version history
}
return false;
}
/**
* Erase a file's versions which exceed the set quota
*/
private static function expire($filename, $versionsSize = null, $offset = 0)
{
if (\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED) == 'true') {
list($uid, $filename) = self::getUidAndFilename($filename);
$versionsFileview = new \OC\Files\View('/' . $uid . '/files_versions');
// get available disk space for user
$softQuota = true;
$quota = \OC_Preferences::getValue($uid, 'files', 'quota');
if ($quota === null || $quota === 'default') {
$quota = \OC::$server->getAppConfig()->getValue('files', 'default_quota');
}
if ($quota === null || $quota === 'none') {
$quota = \OC\Files\Filesystem::free_space('/');
$softQuota = false;
} else {
$quota = \OCP\Util::computerFileSize($quota);
}
// make sure that we have the current size of the version history
if ($versionsSize === null) {
$versionsSize = self::getVersionsSize($uid);
}
// calculate available space for version history
// subtract size of files and current versions size from quota
if ($softQuota) {
$files_view = new \OC\Files\View('/' . $uid . '/files');
$rootInfo = $files_view->getFileInfo('/', false);
$free = $quota - $rootInfo['size'];
// remaining free space for user
if ($free > 0) {
$availableSpace = $free * self::DEFAULTMAXSIZE / 100 - ($versionsSize + $offset);
// how much space can be used for versions
} else {
$availableSpace = $free - $versionsSize - $offset;
}
} else {
$availableSpace = $quota - $offset;
}
$allVersions = Storage::getVersions($uid, $filename);
$time = time();
list($toDelete, $sizeOfDeletedVersions) = self::getExpireList($time, $allVersions);
$availableSpace = $availableSpace + $sizeOfDeletedVersions;
$versionsSize = $versionsSize - $sizeOfDeletedVersions;
// if still not enough free space we rearrange the versions from all files
if ($availableSpace <= 0) {
$result = Storage::getAllVersions($uid);
$allVersions = $result['all'];
foreach ($result['by_file'] as $versions) {
list($toDeleteNew, $size) = self::getExpireList($time, $versions);
$toDelete = array_merge($toDelete, $toDeleteNew);
$sizeOfDeletedVersions += $size;
}
$availableSpace = $availableSpace + $sizeOfDeletedVersions;
$versionsSize = $versionsSize - $sizeOfDeletedVersions;
}
foreach ($toDelete as $key => $path) {
\OC_Hook::emit('\\OCP\\Versions', 'preDelete', array('path' => $path));
self::deleteVersion($versionsFileview, $path);
\OC_Hook::emit('\\OCP\\Versions', 'delete', array('path' => $path));
unset($allVersions[$key]);
// update array with the versions we keep
\OCP\Util::writeLog('files_versions', "Expire: " . $path, \OCP\Util::DEBUG);
}
// Check if enough space is available after versions are rearranged.
// If not we delete the oldest versions until we meet the size limit for versions,
// but always keep the two latest versions
$numOfVersions = count($allVersions) - 2;
$i = 0;
while ($availableSpace < 0 && $i < $numOfVersions) {
$version = current($allVersions);
\OC_Hook::emit('\\OCP\\Versions', 'preDelete', array('path' => $version['path'] . '.v' . $version['version']));
self::deleteVersion($versionsFileview, $version['path'] . '.v' . $version['version']);
\OC_Hook::emit('\\OCP\\Versions', 'delete', array('path' => $version['path'] . '.v' . $version['version']));
\OCP\Util::writeLog('files_versions', 'running out of space! Delete oldest version: ' . $version['path'] . '.v' . $version['version'], \OCP\Util::DEBUG);
$versionsSize -= $version['size'];
$availableSpace += $version['size'];
next($allVersions);
$i++;
}
return $versionsSize;
// finally return the new size of the version history
}
return false;
}
