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expire all operation no longer needed; delete oldest versions if limit of empty space is reached

This commit is contained in:
Björn Schießle 2012-12-17 16:32:09 +01:00
parent a7bb4b128f
commit 75a871ecd7
2 changed files with 30 additions and 69 deletions
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44
apps/files_versions/ajax/expireAll.php
View File

@ -1,44 +0,0 @@
<?php
/**
* ownCloud - user_migrate
*
* @author Sam Tuke
* @copyright 2012 Sam Tuke samtuke@owncloud.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
// TODO: Allow admins to expire versions of any user
// TODO: Provide feedback as to how many versions were deleted
// Check user and app status
OCP\JSON::checkLoggedIn();
OCP\App::checkAppEnabled('files_versions');
OCP\JSON::callCheck();
$versions = new OCA_Versions\Storage();
if( $versions->expireAll() ) {
OCP\JSON::success();
die();
} else {
OCP\JSON::error();
die();
}

55
apps/files_versions/lib/versions.php
View File

@ -30,12 +30,12 @@ class Storage {
const DEFAULTMAXFILESIZE=10485760; // 10MB
const DEFAULTMAXVERSIONS=50;
var $MAX_VERSIONS_PER_INTERVAL = array(1 => array('intervalEndsAfter' => 3600, //first hour, one version every 10sec
'step' => 10),
2 => array('intervalEndsAfter' => 86400, //next 24h, one version every hour
'step' => 3600),
3 => array('intervalEndsAfter' => -1, //until the end one version per day
'step' => 86400),
private static $max_versions_per_interval = array(1 => array('intervalEndsAfter' => 3600, //first hour, one version every 10sec
'step' => 10),
2 => array('intervalEndsAfter' => 86400, //next 24h, one version every hour
'step' => 3600),
3 => array('intervalEndsAfter' => -1, //until the end one version per day
'step' => 86400),
);
private static function getUidAndFilename($filename)
@ -94,7 +94,7 @@ class Storage {
$matches=glob($versionsName.'.v*');
sort($matches);
$parts=explode('.v', end($matches));
if((end($parts)+Storage::$MAX_VERSIONS_PER_INTERVAL[1]['step'])>time()) {
if((end($parts)+Storage::$max_versions_per_interval[1]['step'])>time()) {
return false;
}
}
@ -240,7 +240,7 @@ class Storage {
*/
public static function expire($filename) {
if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {
list($uid, $filename) = self::getUidAndFilename($filename);
list($uid, $filename) = self::getUidAndFilename($filename);
$versions_fileview = new \OC_FilesystemView('/'.$uid.'/files_versions');
// get available disk space for user
@ -266,43 +266,48 @@ class Storage {
$numOfVersions = count($versions);
$interval = 1;
$step = Storage::$MAX_VERSIONS_PER_INTERVAL[$interval]['step'];
if (Storage::$MAX_VERSIONS_PER_INTERVAL[$interval]['intervalEndsAfter'] == -1) {
$step = Storage::$max_versions_per_interval[$interval]['step'];
if (Storage::$max_versions_per_interval[$interval]['intervalEndsAfter'] == -1) {
$nextInterval = -1;
} else {
$nextInterval = $time - Storage::$MAX_VERSIONS_PER_INTERVAL[$interval]['intervalEndsAfter'];
$nextInterval = $time - Storage::$max_versions_per_interval[$interval]['intervalEndsAfter'];
}
$nextVersion = $versions[0]['versions'] - $step;
$nextVersion = $versions[0]['version'] - $step;
for ($i=1; $i<$numOfVersions; $i++) {
if ( $nextInterval == -1 || $versions[$i]['version'] >= $nextInterval ) {
if ( $versions[$i]['version'] > $nextVersion ) {
//distance between two version to small, delete version (TODO)
//distance between two version to small, delete version
error_log("next version:" . $nextVersion . " - version: " . $versions[$i]['version']);
error_log("unlink: " . $filename.'.v'.$versions[$i]['version']);
$versions_fileview->unlink($filename.'.v'.$versions[$i]['version']);
$availableSpace += $versions[$i]['size'];
} else {
$nextVersion = $versions[$i]['version'] - $step;
}
} else { // time to move on to the next interval
$interval++;
$step = Storage::$MAX_VERSIONS_PER_INTERVAL[$interval]['step'];
$step = Storage::$max_versions_per_interval[$interval]['step'];
$nextVersion = $version[$i]['version'] - $step;
if ( Storage::$MAX_VERSIONS_PER_INTERVAL[$interval]['intervalEndsAfter'] == -1 ) {
if ( Storage::$max_versions_per_interval[$interval]['intervalEndsAfter'] == -1 ) {
$nextInterval = -1;
} else {
$nextInterval = $time - Storage::$MAX_VERSIONS_PER_INTERVAL[$interval]['intervalEndsAfter'];
$nextInterval = $time - Storage::$max_versions_per_interval[$interval]['intervalEndsAfter'];
}
}
}
// check if enough space is available after versions are rearranged
$versions = array_reverse( $versions ); // oldest version first
$numOfVersions = count($versions);
$i = 0;
while ($availableSpace < 0) {
$versions_fileview->unlink($filename.'.v'.$versions[$i]['version']);
$availableSpace += $versions[$i]['size'];
$i++;
if ($i = $numOfVersions-2) break; // keep at least the last version
}
}
}
/**
* @brief Erase all old versions of all user files
* @return true/false
*/
public function expireAll() {
$view = \OCP\Files::getStorage('files_versions');
return $view->deleteAll('', true);
}
}