apps/catalogue/tasks.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 datetime import datetime
   6 from traceback import print_exc
   7 from celery.task import task
   8 from django.conf import settings
   9
  10
  11 # TODO: move to model?
  12 def touch_tag(tag):
  13     update_dict = {
  14         'book_count': tag.get_count(),
  15         'changed_at': datetime.now(),
  16     }
  17
  18     type(tag).objects.filter(pk=tag.pk).update(**update_dict)
  19
  20
  21 @task(ignore_result=True)
  22 def fix_tree_tags(book):
  23     book.fix_tree_tags()
  24
  25
  26 @task
  27 def index_book(book_id, book_info=None):
  28     from catalogue.models import Book
  29     try:
  30         return Book.objects.get(id=book_id).search_index(book_info)
  31     except Exception, e:
  32         print "Exception during index: %s" % e
  33         print_exc()
  34         raise e
  35
  36
  37 @task(ignore_result=True, rate_limit=settings.CATALOGUE_CUSTOMPDF_RATE_LIMIT)
  38 def build_custom_pdf(book_id, customizations, file_name):
  39     """Builds a custom PDF file."""
  40     from django.core.files import File
  41     from django.core.files.storage import DefaultStorage
  42     from catalogue.models import Book
  43
  44     print "will gen %s" % DefaultStorage().path(file_name)
  45     if not DefaultStorage().exists(file_name):
  46         kwargs = {
  47             'cover': True,
  48         }
  49         if 'no-cover' in customizations:
  50             kwargs['cover'] = False
  51             customizations.remove('no-cover')
  52         pdf = Book.objects.get(pk=book_id).wldocument().as_pdf(
  53                 customizations=customizations,
  54                 morefloats=settings.LIBRARIAN_PDF_MOREFLOATS,
  55                 **kwargs)
  56         DefaultStorage().save(file_name, File(open(pdf.get_filename())))