friendica/src/Worker/RemoveUnusedContacts.php

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<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* 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 <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Worker;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Database\DBA;
use Friendica\Database\DBStructure;
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use Friendica\Model\Photo;
/**
* Removes public contacts that aren't in use
*/
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class RemoveUnusedContacts
{
public static function execute()
{
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$condition = ["`uid` = ? AND NOT `self` AND NOT `nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` != ?)
AND (NOT `network` IN (?, ?, ?, ?, ?, ?) OR (`archive` AND `success_update` < UTC_TIMESTAMP() - INTERVAL ? DAY))
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AND NOT `id` IN (SELECT `author-id` FROM `post-user`) AND NOT `id` IN (SELECT `owner-id` FROM `post-user`)
AND NOT `id` IN (SELECT `causer-id` FROM `post-user`) AND NOT `id` IN (SELECT `cid` FROM `post-tag`)
AND NOT `id` IN (SELECT `contact-id` FROM `post-user`) AND NOT `id` IN (SELECT `cid` FROM `user-contact`)
AND NOT `id` IN (SELECT `cid` FROM `event`) AND NOT `id` IN (SELECT `contact-id` FROM `group_member`)
AND `created` < UTC_TIMESTAMP() - INTERVAL ? DAY",
0, 0, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, Protocol::FEED, Protocol::MAIL, Protocol::ACTIVITYPUB, 365, 30];
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$total = DBA::count('contact', $condition);
Logger::notice('Starting removal', ['total' => $total]);
$count = 0;
$contacts = DBA::select('contact', ['id', 'uid'], $condition);
while ($contact = DBA::fetch($contacts)) {
if (Photo::delete(['uid' => $contact['uid'], 'contact-id' => $contact['id']])) {
if (DBStructure::existsTable('thread')) {
DBA::delete('thread', ['owner-id' => $contact['id']]);
DBA::delete('thread', ['author-id' => $contact['id']]);
}
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if (DBStructure::existsTable('item')) {
DBA::delete('item', ['owner-id' => $contact['id']]);
DBA::delete('item', ['author-id' => $contact['id']]);
DBA::delete('item', ['causer-id' => $contact['id']]);
}
// There should be none entry for the contact in these tables when none was found in "post-user".
// But we want to be sure since the foreign key prohibits deletion otherwise.
DBA::delete('post', ['owner-id' => $contact['id']]);
DBA::delete('post', ['author-id' => $contact['id']]);
DBA::delete('post', ['causer-id' => $contact['id']]);
DBA::delete('post-thread', ['owner-id' => $contact['id']]);
DBA::delete('post-thread', ['author-id' => $contact['id']]);
DBA::delete('post-thread', ['causer-id' => $contact['id']]);
DBA::delete('post-thread-user', ['owner-id' => $contact['id']]);
DBA::delete('post-thread-user', ['author-id' => $contact['id']]);
DBA::delete('post-thread-user', ['causer-id' => $contact['id']]);
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DBA::delete('contact', ['id' => $contact['id']]);
if ((++$count % 1000) == 0) {
Logger::notice('In removal', ['count' => $count, 'total' => $total]);
}
}
}
DBA::close($contacts);
Logger::notice('Removal done', ['count' => $count, 'total' => $total]);
}
}