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 traceback import print_exc
   6 from celery.task import task
   7 from celery.utils.log import get_task_logger
   8 from django.conf import settings
   9 from django.utils import timezone
  10
  11 from catalogue.utils import gallery_path
  12 from waiter.models import WaitedFile
  13
  14 task_logger = get_task_logger(__name__)
  15
  16
  17 # TODO: move to model?
  18 def touch_tag(tag):
  19     update_dict = {
  20         'changed_at': timezone.now(),
  21     }
  22
  23     type(tag).objects.filter(pk=tag.pk).update(**update_dict)
  24
  25
  26 @task
  27 def index_book(book_id, book_info=None, **kwargs):
  28     from catalogue.models import Book
  29     try:
  30         return Book.objects.get(id=book_id).search_index(book_info, **kwargs)
  31     except Exception as 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, waiter_id=None):
  39     """Builds a custom PDF file."""
  40     try:
  41         from django.core.files import File
  42         from django.core.files.storage import DefaultStorage
  43         from catalogue.models import Book
  44
  45         task_logger.info(DefaultStorage().path(file_name))
  46         if not DefaultStorage().exists(file_name):
  47             kwargs = {
  48                 'cover': True,
  49             }
  50             if 'nocover' in customizations:
  51                 kwargs['cover'] = False
  52                 customizations.remove('nocover')
  53             wldoc = Book.objects.get(pk=book_id).wldocument()
  54             pdf = wldoc.as_pdf(
  55                 customizations=customizations,
  56                 morefloats=settings.LIBRARIAN_PDF_MOREFLOATS,
  57                 ilustr_path=gallery_path(wldoc.book_info.url.slug),
  58                 **kwargs)
  59             DefaultStorage().save(file_name, File(open(pdf.get_filename(), 'rb')))
  60     finally:
  61         if waiter_id is not None:
  62             WaitedFile.objects.filter(pk=waiter_id).delete()
  63
  64
  65 @task(ignore_result=True)
  66 def update_counters():
  67     from .helpers import update_counters
  68     update_counters()