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