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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Background job to delete prolific users without disrupting front-end too much.
*
* Up to 50 messages are deleted on each run through; when all messages are gone,
* the actual account is deleted.
*
* @package QueueHandler
* @maintainer Brion Vibber <brion@status.net>
*/
class DelUserQueueHandler extends QueueHandler
{
const DELETION_WINDOW = 50;
public function transport()
{
return 'deluser';
}
public function handle($user)
{
if (!($user instanceof User)) {
common_log(LOG_ERR, "Got a bogus user, not deleting");
return true;
}
$user = User::staticGet('id', $user->id);
if (!$user) {
common_log(LOG_INFO, "User {$user->nickname} was deleted before we got here.");
return true;
}
try {
if (!$user->hasRole(Profile_role::DELETED)) {
common_log(LOG_INFO, "User {$user->nickname} is not pending deletion; aborting.");
return true;
}
} catch (UserNoProfileException $unp) {
common_log(LOG_INFO, "Deleting user {$user->nickname} with no profile... probably a good idea!");
}
$notice = $this->getNextBatch($user);
if ($notice->N) {
common_log(LOG_INFO, "Deleting next {$notice->N} notices by {$user->nickname}");
while ($notice->fetch()) {
$del = clone($notice);
$del->delete();
}
// @todo improve reliability in case we died during the above deletions
// with a fatal error. If the job is lost, we should perform some kind
// of garbage collection later.
// Queue up the next batch.
$qm = QueueManager::get();
$qm->enqueue($user, 'deluser');
} else {
// Out of notices? Let's finish deleting this guy!
$user->delete();
common_log(LOG_INFO, "User $user->id $user->nickname deleted.");
return true;
}
return true;
}
/**
* Fetch the next self::DELETION_WINDOW messages for this user.
* @return Notice
*/
protected function getNextBatch(User $user)
{
$notice = new Notice();
$notice->profile_id = $user->id;
$notice->limit(self::DELETION_WINDOW);
$notice->find();
return $notice;
}
}
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