src/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 celery.utils.log import get_task_logger
   9 from django.conf import settings
  10
  11 from catalogue.utils import gallery_path
  12 from wolnelektury.utils import localtime_to_utc
  13 from waiter.models import WaitedFile
  14
  15 task_logger = get_task_logger(__name__)
  16
  17
  18 # TODO: move to model?
  19 def touch_tag(tag):
  20     update_dict = {
  21         'changed_at': localtime_to_utc(datetime.now()),
  22     }
  23
  24     type(tag).objects.filter(pk=tag.pk).update(**update_dict)
  25
  26
  27 @task
  28 def index_book(book_id, book_info=None, **kwargs):
  29     from catalogue.models import Book
  30     try:
  31         return Book.objects.get(id=book_id).search_index(book_info, **kwargs)
  32     except Exception, e:
  33         print "Exception during index: %s" % e
  34         print_exc()
  35         raise e
  36
  37
  38 @task(ignore_result=True, rate_limit=settings.CATALOGUE_CUSTOMPDF_RATE_LIMIT)
  39 def build_custom_pdf(book_id, customizations, file_name, waiter_id=None):
  40     """Builds a custom PDF file."""
  41     try:
  42         from django.core.files import File
  43         from django.core.files.storage import DefaultStorage
  44         from catalogue.models import Book
  45
  46         task_logger.info(DefaultStorage().path(file_name))
  47         if not DefaultStorage().exists(file_name):
  48             kwargs = {
  49                 'cover': True,
  50             }
  51             if 'no-cover' in customizations:
  52                 kwargs['cover'] = False
  53                 customizations.remove('no-cover')
  54             wldoc = Book.objects.get(pk=book_id).wldocument()
  55             pdf = wldoc.as_pdf(
  56                 customizations=customizations,
  57                 morefloats=settings.LIBRARIAN_PDF_MOREFLOATS,
  58                 ilustr_path=gallery_path(wldoc.book_info.url.slug),
  59                 **kwargs)
  60             DefaultStorage().save(file_name, File(open(pdf.get_filename())))
  61     finally:
  62         if waiter_id is not None:
  63             WaitedFile.objects.filter(pk=waiter_id).delete()
  64
  65
  66 @task(ignore_result=True)
  67 def update_counters():
  68     from .helpers import update_counters
  69     update_counters()