X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/b2d342589a7889a3b096e7192453d53bd28eed7d..94ca8037f9a5891b7ded1c92c639e0fbc676e67b:/src/catalogue/fields.py diff --git a/src/catalogue/fields.py b/src/catalogue/fields.py index 42612522c..d88787e63 100644 --- a/src/catalogue/fields.py +++ b/src/catalogue/fields.py @@ -1,20 +1,24 @@ -# -*- coding: utf-8 -*- # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later. # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # from django.conf import settings from django.core.files import File +from django.core.files.storage import FileSystemStorage from django.db import models from django.db.models.fields.files import FieldFile from catalogue import app_settings -from catalogue.constants import LANGUAGES_3TO2 -from catalogue.utils import remove_zip, truncate_html_words +from catalogue.constants import LANGUAGES_3TO2, EBOOK_FORMATS_WITH_CHILDREN, EBOOK_FORMATS_WITHOUT_CHILDREN +from catalogue.utils import remove_zip, truncate_html_words, gallery_path, gallery_url from celery.task import Task, task from celery.utils.log import get_task_logger from waiter.utils import clear_cache task_logger = get_task_logger(__name__) +ETAG_SCHEDULED_SUFFIX = '-scheduled' +EBOOK_BUILD_PRIORITY = 0 +EBOOK_REBUILD_PRIORITY = 9 + class EbookFieldFile(FieldFile): """Represents contents of an ebook file field.""" @@ -23,14 +27,34 @@ class EbookFieldFile(FieldFile): """Build the ebook immediately.""" return self.field.builder.build(self) - def build_delay(self): + def build_delay(self, priority=EBOOK_BUILD_PRIORITY): """Builds the ebook in a delayed task.""" - return self.field.builder.delay(self.instance, self.field.attname) + self.update_etag( + "".join([self.field.get_current_etag(), ETAG_SCHEDULED_SUFFIX]) + ) + return self.field.builder.apply_async( + [self.instance, self.field.attname], + priority=priority + ) + + def get_url(self): + return self.instance.media_url(self.field.attname.split('_')[0]) + + def set_readable(self, readable): + import os + permissions = 0o644 if readable else 0o600 + os.chmod(self.path, permissions) + + def update_etag(self, etag): + setattr(self.instance, self.field.etag_field_name, etag) + if self.instance.pk: + self.instance.save(update_fields=[self.field.etag_field_name]) class EbookField(models.FileField): """Represents an ebook file field, attachable to a model.""" attr_class = EbookFieldFile + registry = [] def __init__(self, format_name, *args, **kwargs): super(EbookField, self).__init__(*args, **kwargs) @@ -49,14 +73,54 @@ class EbookField(models.FileField): def contribute_to_class(self, cls, name): super(EbookField, self).contribute_to_class(cls, name) + self.etag_field_name = f'{name}_etag' + def has(model_instance): return bool(getattr(model_instance, self.attname, None)) has.__doc__ = None has.__name__ = str("has_%s" % self.attname) has.short_description = self.name has.boolean = True + + self.registry.append(self) + setattr(cls, 'has_%s' % self.attname, has) + def get_current_etag(self): + import pkg_resources + librarian_version = pkg_resources.get_distribution("librarian").version + return librarian_version + + def schedule_stale(self, queryset=None): + """Schedule building this format for all the books where etag is stale.""" + # If there is not ETag field, bail. That's true for xml file field. + if not hasattr(self.model, f'{self.attname}_etag'): + return + + etag = self.get_current_etag() + if queryset is None: + queryset = self.model.objects.all() + + if self.format_name in EBOOK_FORMATS_WITHOUT_CHILDREN + ['html']: + queryset = queryset.filter(children=None) + + queryset = queryset.exclude(**{ + f'{self.etag_field_name}__in': [ + etag, f'{etag}{ETAG_SCHEDULED_SUFFIX}' + ] + }) + for obj in queryset: + fieldfile = getattr(obj, self.attname) + priority = EBOOK_REBUILD_PRIORITY if fieldfile else EBOOK_BUILD_PRIORITY + fieldfile.build_delay(priority=priority) + + @classmethod + def schedule_all_stale(cls): + """Schedules all stale ebooks of all formats to rebuild.""" + for field in cls.registry: + field.schedule_stale() + + class BuildEbook(Task): formats = {} @@ -85,19 +149,32 @@ class BuildEbook(Task): def run(self, obj, field_name): """Just run `build` on FieldFile, can't pass it directly to Celery.""" - task_logger.info("%s -> %s" % (obj.slug, field_name)) + fieldfile = getattr(obj, field_name) + + # Get etag value before actually building the file. + etag = fieldfile.field.get_current_etag() + task_logger.info("%s -> %s@%s" % (obj.slug, field_name, etag)) ret = self.build(getattr(obj, field_name)) - obj.flush_includes() + fieldfile.update_etag(etag) + obj.clear_cache() return ret + def set_file_permissions(self, fieldfile): + if fieldfile.instance.preview: + fieldfile.set_readable(False) + def build(self, fieldfile): book = fieldfile.instance out = self.transform(book.wldocument(), fieldfile) - fieldfile.save(None, File(open(out.get_filename())), save=False) + fieldfile.save(None, File(open(out.get_filename(), 'rb')), save=False) + self.set_file_permissions(fieldfile) if book.pk is not None: - type(book).objects.filter(pk=book.pk).update(**{ + books = type(book).objects.filter(pk=book.pk) + books.update(**{ fieldfile.field.attname: fieldfile }) + for book in books: + book.save() # just to trigger post-save if fieldfile.field.format_name in app_settings.FORMAT_ZIPS: remove_zip(app_settings.FORMAT_ZIPS[fieldfile.field.format_name]) # Don't decorate BuildEbook, because we want to subclass it. @@ -117,7 +194,9 @@ class BuildTxt(BuildEbook): class BuildPdf(BuildEbook): @staticmethod def transform(wldoc, fieldfile): - return wldoc.as_pdf(morefloats=settings.LIBRARIAN_PDF_MOREFLOATS, cover=True) + return wldoc.as_pdf( + morefloats=settings.LIBRARIAN_PDF_MOREFLOATS, cover=True, + ilustr_path=gallery_path(wldoc.book_info.url.slug), customizations=['notoc']) def build(self, fieldfile): BuildEbook.build(self, fieldfile) @@ -129,7 +208,15 @@ class BuildPdf(BuildEbook): class BuildEpub(BuildEbook): @staticmethod def transform(wldoc, fieldfile): - return wldoc.as_epub(cover=True) + return wldoc.as_epub(cover=True, ilustr_path=gallery_path(wldoc.book_info.url.slug)) + + +@BuildEbook.register('mobi') +@task(ignore_result=True) +class BuildMobi(BuildEbook): + @staticmethod + def transform(wldoc, fieldfile): + return wldoc.as_mobi(cover=True, ilustr_path=gallery_path(wldoc.book_info.url.slug)) @BuildEbook.register('html') @@ -137,16 +224,14 @@ class BuildEpub(BuildEbook): class BuildHtml(BuildEbook): def build(self, fieldfile): from django.core.files.base import ContentFile - from fnpdjango.utils.text.slughifi import slughifi + from slugify import slugify from sortify import sortify from librarian import html from catalogue.models import Fragment, Tag book = fieldfile.instance - html_output = self.transform( - book.wldocument(parse_dublincore=False), - fieldfile) + html_output = self.transform(book.wldocument(parse_dublincore=False), fieldfile) # Delete old fragments, create from scratch if necessary. book.fragments.all().delete() @@ -160,7 +245,8 @@ class BuildHtml(BuildEbook): if lang not in [ln[0] for ln in settings.LANGUAGES]: lang = None - fieldfile.save(None, ContentFile(html_output.get_string()), save=False) + fieldfile.save(None, ContentFile(html_output.get_bytes()), save=False) + self.set_file_permissions(fieldfile) type(book).objects.filter(pk=book.pk).update(**{ fieldfile.field.attname: fieldfile }) @@ -179,18 +265,23 @@ class BuildHtml(BuildEbook): if lang == settings.LANGUAGE_CODE: # Allow creating themes if book in default language. tag, created = Tag.objects.get_or_create( - slug=slughifi(theme_name), - category='theme') + slug=slugify(theme_name), + category='theme' + ) if created: tag.name = theme_name setattr(tag, "name_%s" % lang, theme_name) tag.sort_key = sortify(theme_name.lower()) + tag.for_books = True tag.save() themes.append(tag) elif lang is not None: # Don't create unknown themes in non-default languages. try: - tag = Tag.objects.get(category='theme', **{"name_%s" % lang: theme_name}) + tag = Tag.objects.get( + category='theme', + **{"name_%s" % lang: theme_name} + ) except Tag.DoesNotExist: pass else: @@ -202,24 +293,77 @@ class BuildHtml(BuildEbook): short_text = truncate_html_words(text, 15) if text == short_text: short_text = '' - new_fragment = Fragment.objects.create(anchor=fragment.id, book=book, text=text, short_text=short_text) + new_fragment = Fragment.objects.create( + anchor=fragment.id, + book=book, + text=text, + short_text=short_text + ) new_fragment.save() new_fragment.tags = set(meta_tags + themes) + for theme in themes: + if not theme.for_books: + theme.for_books = True + theme.save() book.html_built.send(sender=type(self), instance=book) return True return False + @staticmethod + def transform(wldoc, fieldfile): + # ugly, but we can't use wldoc.book_info here + from librarian import DCNS + url_elem = wldoc.edoc.getroot().find('.//' + DCNS('identifier.url')) + if url_elem is None: + gallery = '' + else: + gallery = gallery_url(slug=url_elem.text.rsplit('/', 1)[1]) + return wldoc.as_html(options={'gallery': "'%s'" % gallery}) + + +class BuildCover(BuildEbook): + def set_file_permissions(self, fieldfile): + pass + @BuildEbook.register('cover_thumb') @task(ignore_result=True) -class BuildCoverThumb(BuildEbook): +class BuildCoverThumb(BuildCover): @classmethod def transform(cls, wldoc, fieldfile): from librarian.cover import WLCover return WLCover(wldoc.book_info, height=193).output_file() +@BuildEbook.register('cover_api_thumb') +@task(ignore_result=True) +class BuildCoverApiThumb(BuildCover): + @classmethod + def transform(cls, wldoc, fieldfile): + from librarian.cover import WLNoBoxCover + return WLNoBoxCover(wldoc.book_info, height=500).output_file() + + +@BuildEbook.register('simple_cover') +@task(ignore_result=True) +class BuildSimpleCover(BuildCover): + @classmethod + def transform(cls, wldoc, fieldfile): + from librarian.cover import WLNoBoxCover + return WLNoBoxCover(wldoc.book_info, height=1000).output_file() + + +@BuildEbook.register('cover_ebookpoint') +@task(ignore_result=True) +class BuildCoverEbookpoint(BuildCover): + @classmethod + def transform(cls, wldoc, fieldfile): + from librarian.cover import EbookpointCover + return EbookpointCover(wldoc.book_info).output_file() + + +# not used, but needed for migrations class OverwritingFieldFile(FieldFile): """ Deletes the old file before saving the new one. @@ -235,3 +379,10 @@ class OverwritingFieldFile(FieldFile): class OverwritingFileField(models.FileField): attr_class = OverwritingFieldFile + + +class OverwriteStorage(FileSystemStorage): + + def get_available_name(self, name, max_length=None): + self.delete(name) + return name