a2b8be08881c614f7b5cdb49cc27bcfbb66cb3f8
[wolnelektury.git] / 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 celery.utils.log import get_task_logger
9 from django.conf import settings
10 from wolnelektury.utils import localtime_to_utc
11 from waiter.models import WaitedFile
12
13 task_logger = get_task_logger(__name__)
14
15
16 # TODO: move to model?
17 def touch_tag(tag):
18     update_dict = {
19         'changed_at': localtime_to_utc(datetime.now()),
20     }
21
22     type(tag).objects.filter(pk=tag.pk).update(**update_dict)
23
24
25 @task
26 def index_book(book_id, book_info=None, **kwargs):
27     from catalogue.models import Book
28     try:
29         return Book.objects.get(id=book_id).search_index(book_info, **kwargs)
30     except Exception, e:
31         print "Exception during index: %s" % e
32         print_exc()
33         raise e
34
35
36 @task(ignore_result=True, rate_limit=settings.CATALOGUE_CUSTOMPDF_RATE_LIMIT)
37 def build_custom_pdf(book_id, customizations, file_name, waiter_id=None):
38     """Builds a custom PDF file."""
39     try:
40         from django.core.files import File
41         from django.core.files.storage import DefaultStorage
42         from catalogue.models import Book
43
44         task_logger.info(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())))
57     finally:
58         if waiter_id is not None:
59             WaitedFile.objects.filter(pk=waiter_id).delete()