src/Worker/RemoveUnusedContacts.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Worker;
  23
  24 use Friendica\Core\Logger;
  25 use Friendica\Core\Protocol;
  26 use Friendica\Database\DBA;
  27 use Friendica\Database\DBStructure;
  28 use Friendica\Model\Photo;
  29 use Friendica\Util\DateTimeFormat;
  30
  31 /**
  32  * Removes public contacts that aren't in use
  33  */
  34 class RemoveUnusedContacts
  35 {
  36         public static function execute()
  37         {
  38                 $condition = ["`id` != ? AND `uid` = ? AND NOT `self` AND NOT `nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` != ?)
  39                         AND (NOT `network` IN (?, ?, ?, ?, ?, ?) OR (`archive` AND `success_update` < ?))
  40                         AND NOT `id` IN (SELECT `author-id` FROM `post-user`) AND NOT `id` IN (SELECT `owner-id` FROM `post-user`)
  41                         AND NOT `id` IN (SELECT `causer-id` FROM `post-user`) AND NOT `id` IN (SELECT `cid` FROM `post-tag`)
  42                         AND NOT `id` IN (SELECT `contact-id` FROM `post-user`) AND NOT `id` IN (SELECT `cid` FROM `user-contact`)
  43                         AND NOT `id` IN (SELECT `cid` FROM `event`) AND NOT `id` IN (SELECT `contact-id` FROM `group_member`)
  44                         AND `created` < ?",
  45                         0, 0, 0, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, Protocol::FEED, Protocol::MAIL, Protocol::ACTIVITYPUB, DateTimeFormat::utc('now - 365 days'), DateTimeFormat::utc('now - 30 days')];
  46
  47                 $total = DBA::count('contact', $condition);
  48                 Logger::notice('Starting removal', ['total' => $total]);
  49                 $count = 0;
  50                 $contacts = DBA::select('contact', ['id', 'uid'], $condition);
  51                 while ($contact = DBA::fetch($contacts)) {
  52                         if (Photo::delete(['uid' => $contact['uid'], 'contact-id' => $contact['id']])) {
  53                                 if (DBStructure::existsTable('thread')) {
  54                                         DBA::delete('thread', ['owner-id' => $contact['id']]);
  55                                         DBA::delete('thread', ['author-id' => $contact['id']]);
  56                                 }
  57                                 if (DBStructure::existsTable('item')) {
  58                                         DBA::delete('item', ['owner-id' => $contact['id']]);
  59                                         DBA::delete('item', ['author-id' => $contact['id']]);
  60                                         DBA::delete('item', ['causer-id' => $contact['id']]);
  61                                 }
  62
  63                                 // There should be none entry for the contact in these tables when none was found in "post-user".
  64                                 // But we want to be sure since the foreign key prohibits deletion otherwise.
  65                                 DBA::delete('post', ['owner-id' => $contact['id']]);
  66                                 DBA::delete('post', ['author-id' => $contact['id']]);
  67                                 DBA::delete('post', ['causer-id' => $contact['id']]);
  68
  69                                 DBA::delete('post-thread', ['owner-id' => $contact['id']]);
  70                                 DBA::delete('post-thread', ['author-id' => $contact['id']]);
  71                                 DBA::delete('post-thread', ['causer-id' => $contact['id']]);
  72
  73                                 DBA::delete('post-thread-user', ['owner-id' => $contact['id']]);
  74                                 DBA::delete('post-thread-user', ['author-id' => $contact['id']]);
  75                                 DBA::delete('post-thread-user', ['causer-id' => $contact['id']]);
  76
  77                                 DBA::delete('contact', ['id' => $contact['id']]);
  78                                 if ((++$count % 1000) == 0) {
  79                                         Logger::notice('In removal', ['count' => $count, 'total' => $total]);
  80                                 }
  81                         }
  82                 }
  83                 DBA::close($contacts);
  84                 Logger::notice('Removal done', ['count' => $count, 'total' => $total]);
  85         }
  86 }