src/Worker/RemoveUnusedContacts.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, 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
  30 /**
  31  * Removes public contacts that aren't in use
  32  */
  33 class RemoveUnusedContacts
  34 {
  35         public static function execute()
  36         {
  37                 $condition = ["`id` != ? AND `uid` = ? AND NOT `self` AND NOT `nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` != ?)
  38                         AND (NOT `network` IN (?, ?, ?, ?, ?, ?) OR (`archive` AND `success_update` < UTC_TIMESTAMP() - INTERVAL ? DAY))
  39                         AND NOT `id` IN (SELECT `author-id` FROM `post-user`) AND NOT `id` IN (SELECT `owner-id` FROM `post-user`)
  40                         AND NOT `id` IN (SELECT `causer-id` FROM `post-user`) AND NOT `id` IN (SELECT `cid` FROM `post-tag`)
  41                         AND NOT `id` IN (SELECT `contact-id` FROM `post-user`) AND NOT `id` IN (SELECT `cid` FROM `user-contact`)
  42                         AND NOT `id` IN (SELECT `cid` FROM `event`) AND NOT `id` IN (SELECT `contact-id` FROM `group_member`)
  43                         AND `created` < UTC_TIMESTAMP() - INTERVAL ? DAY",
  44                         0, 0, 0, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, Protocol::FEED, Protocol::MAIL, Protocol::ACTIVITYPUB, 365, 30];
  45
  46                 $total = DBA::count('contact', $condition);
  47                 Logger::notice('Starting removal', ['total' => $total]);
  48                 $count = 0;
  49                 $contacts = DBA::select('contact', ['id', 'uid'], $condition);
  50                 while ($contact = DBA::fetch($contacts)) {
  51                         if (Photo::delete(['uid' => $contact['uid'], 'contact-id' => $contact['id']])) {
  52                                 if (DBStructure::existsTable('thread')) {
  53                                         DBA::delete('thread', ['owner-id' => $contact['id']]);
  54                                         DBA::delete('thread', ['author-id' => $contact['id']]);
  55                                 }
  56                                 if (DBStructure::existsTable('item')) {
  57                                         DBA::delete('item', ['owner-id' => $contact['id']]);
  58                                         DBA::delete('item', ['author-id' => $contact['id']]);
  59                                         DBA::delete('item', ['causer-id' => $contact['id']]);
  60                                 }
  61
  62                                 // There should be none entry for the contact in these tables when none was found in "post-user".
  63                                 // But we want to be sure since the foreign key prohibits deletion otherwise.
  64                                 DBA::delete('post', ['owner-id' => $contact['id']]);
  65                                 DBA::delete('post', ['author-id' => $contact['id']]);
  66                                 DBA::delete('post', ['causer-id' => $contact['id']]);
  67
  68                                 DBA::delete('post-thread', ['owner-id' => $contact['id']]);
  69                                 DBA::delete('post-thread', ['author-id' => $contact['id']]);
  70                                 DBA::delete('post-thread', ['causer-id' => $contact['id']]);
  71
  72                                 DBA::delete('post-thread-user', ['owner-id' => $contact['id']]);
  73                                 DBA::delete('post-thread-user', ['author-id' => $contact['id']]);
  74                                 DBA::delete('post-thread-user', ['causer-id' => $contact['id']]);
  75
  76                                 DBA::delete('contact', ['id' => $contact['id']]);
  77                                 if ((++$count % 1000) == 0) {
  78                                         Logger::notice('In removal', ['count' => $count, 'total' => $total]);
  79                                 }
  80                         }
  81                 }
  82                 DBA::close($contacts);
  83                 Logger::notice('Removal done', ['count' => $count, 'total' => $total]);
  84         }
  85 }