apps/catalogue/management/commands/checkintegrity.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from optparse import make_option
   6 from django.core.management.base import BaseCommand
   7
   8 from catalogue.models import Book
   9
  10
  11 class Command(BaseCommand):
  12     option_list = BaseCommand.option_list + (
  13         make_option('-q', '--quiet', action='store_false', dest='verbose', default=True,
  14             help='Suppress output'),
  15         make_option('-d', '--dry-run', action='store_true', dest='dry_run', default=False,
  16             help="Just check for problems, don't fix them"),
  17     )
  18     help = 'Checks integrity of catalogue data.'
  19
  20     def handle(self, **options):
  21         from django.db import transaction
  22
  23         verbose = options['verbose']
  24
  25         with transaction.commit_on_success():
  26             for book in Book.objects.all().iterator():
  27                 try:
  28                     info = book.wldocument().book_info
  29                 except:
  30                     if verbose:
  31                         print "ERROR! Bad XML for book:", book.slug
  32                         print "To resolve: republish."
  33                         print
  34                 else:
  35                     should_be = [p.slug for p in info.parts]
  36                     is_now = [p.slug for p in book.children.all().order_by('parent_number')]
  37                     if should_be != is_now:
  38                         if verbose:
  39                             print "ERROR! Wrong children for book:", book.slug
  40                             print "Is:       ", is_now
  41                             print "Should be:", should_be
  42                             print "To resolve: republish parent book."
  43                             print
  44
  45                 # Check for ancestry.
  46                 parents = []
  47                 parent = book.parent
  48                 while parent:
  49                     parents.append(parent)
  50                     parent = parent.parent
  51                 ancestors = list(book.ancestor.all())
  52                 if set(ancestors) != set(parents):
  53                     if options['verbose']:
  54                         print "Wrong ancestry for book:", book
  55                         print "Is:       ", ", ".join(ancestors)
  56                         print "Should be:", ", ".join(parents)
  57                     if not options['dry_run']:
  58                         book.repopulate_ancestors()
  59                         if options['verbose']:
  60                             print "Fixed."
  61                     if options['verbose']:
  62                         print
  63
  64                 # TODO: check metadata tags, reset counters