deluserqueuehandler.php 3.1 KB

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  1. <?php
  2. /*
  3. * StatusNet - the distributed open-source microblogging tool
  4. * Copyright (C) 2010, StatusNet, Inc.
  5. *
  6. * This program is free software: you can redistribute it and/or modify
  7. * it under the terms of the GNU Affero General Public License as published by
  8. * the Free Software Foundation, either version 3 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU Affero General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU Affero General Public License
  17. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  18. */
  19. /**
  20. * Background job to delete prolific users without disrupting front-end too much.
  21. *
  22. * Up to 50 messages are deleted on each run through; when all messages are gone,
  23. * the actual account is deleted.
  24. *
  25. * @package QueueHandler
  26. * @maintainer Brion Vibber <brion@status.net>
  27. */
  28. class DelUserQueueHandler extends QueueHandler
  29. {
  30. const DELETION_WINDOW = 50;
  31. public function transport()
  32. {
  33. return 'deluser';
  34. }
  35. public function handle($user)
  36. {
  37. if (!($user instanceof User)) {
  38. common_log(LOG_ERR, "Got a bogus user, not deleting");
  39. return true;
  40. }
  41. $user = User::getKV('id', $user->id);
  42. if (!$user) {
  43. common_log(LOG_INFO, "User {$user->nickname} was deleted before we got here.");
  44. return true;
  45. }
  46. try {
  47. if (!$user->hasRole(Profile_role::DELETED)) {
  48. common_log(LOG_INFO, "User {$user->nickname} is not pending deletion; aborting.");
  49. return true;
  50. }
  51. } catch (UserNoProfileException $unp) {
  52. common_log(LOG_INFO, "Deleting user {$user->nickname} with no profile... probably a good idea!");
  53. }
  54. $notice = $this->getNextBatch($user);
  55. if ($notice->N) {
  56. common_log(LOG_INFO, "Deleting next {$notice->N} notices by {$user->nickname}");
  57. while ($notice->fetch()) {
  58. $del = clone($notice);
  59. $del->delete();
  60. }
  61. // @todo improve reliability in case we died during the above deletions
  62. // with a fatal error. If the job is lost, we should perform some kind
  63. // of garbage collection later.
  64. // Queue up the next batch.
  65. $qm = QueueManager::get();
  66. $qm->enqueue($user, 'deluser');
  67. } else {
  68. // Out of notices? Let's finish deleting this guy!
  69. $user->delete();
  70. common_log(LOG_INFO, "User $user->id $user->nickname deleted.");
  71. return true;
  72. }
  73. return true;
  74. }
  75. /**
  76. * Fetch the next self::DELETION_WINDOW messages for this user.
  77. * @return Notice
  78. */
  79. protected function getNextBatch(User $user)
  80. {
  81. $notice = new Notice();
  82. $notice->profile_id = $user->id;
  83. $notice->limit(self::DELETION_WINDOW);
  84. $notice->find();
  85. return $notice;
  86. }
  87. }