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Code Issues Releases Wiki Activity

backup metadata second step

This commit is contained in:
Ozzieisaacs 2022-09-14 17:03:48 +02:00
parent ca0ee5d391
commit 241aa77d41
3 changed files with 91 additions and 38 deletions
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25
cps/db.py
View File

@ -399,8 +399,29 @@ class CustomColumns(Base):
display_dict = json.loads(self.display)
return display_dict
def to_json(self):
pass
def to_json(self, value, extra):
content = dict()
content['table'] = "custom_column_" + str(self.id)
content['column'] = "value"
content['datatype'] = self.datatype
content['is_multiple'] = None if not self.is_multiple else self.is_multiple
content['kind'] = "field"
content['name'] = self.name
content['search_terms'] = ['#' + self.label]
content['label'] = self.label
content['colnum'] = self.id
content['display'] = self.get_display_dict()
content['is_custom'] = True
content['is_category'] = self.datatype in ['text', 'rating', 'enumeration', 'series']
content['link_column'] = "value"
content['category_sort'] = "value"
content['is_csp'] = False
content['is_editable'] = self.editable
content['rec_index'] = self.id + 22 # toDo why ??
content['#value#'] = value
content['#extra#'] = extra
content['is_multiple2'] = {}
return json.dumps(content, ensure_ascii=False)
class AlchemyEncoder(json.JSONEncoder):

2
cps/schedule.py
View File

@ -34,7 +34,7 @@ def get_scheduled_tasks(reconnect=True):
# ToDo make configurable. Generate metadata.opf file for each changed book
if True:
tasks.append([lambda: TaskBackupMetadata(), 'backup metadata', False])
tasks.append([lambda: TaskBackupMetadata(), "en", 'backup metadata', False])
# Generate all missing book cover thumbnails
if config.schedule_generate_book_covers:

102
cps/tasks/metadata_backup.py
View File

@ -15,9 +15,9 @@
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import datetime
import os
import json
from lxml import objectify
from urllib.request import urlopen
from lxml import etree
from html import escape
@ -41,33 +41,35 @@ NSMAP = {'dc': PURL_NAMESPACE, 'opf': OPF_NAMESPACE}
class TaskBackupMetadata(CalibreTask):
def __init__(self, task_message=N_('Backing up Metadata')):
def __init__(self, export_language="en", translated_title="cover", task_message=N_('Backing up Metadata')):
super(TaskBackupMetadata, self).__init__(task_message)
self.log = logger.create()
self.db_session = db.CalibreDB(expire_on_commit=False, init=True).session
self.calibre_db = db.CalibreDB(expire_on_commit=False, init=True)
self.export_language = export_language
self.translated_title = translated_title
def run(self, worker_thread):
try:
metadata_backup = self.db_session.query(db.Metadata_Dirtied).all()
custom_columns = self.db_session.query(db.CustomColumns).all()
metadata_backup = self.calibre_db.session.query(db.Metadata_Dirtied).all()
custom_columns = self.calibre_db.session.query(db.CustomColumns).order_by(db.CustomColumns.label).all()
for backup in metadata_backup:
book = self.db_session.query(db.Books).filter(db.Books.id == backup.book).one_or_none()
# self.db_session.query(db.Metadata_Dirtied).filter(db.Metadata_Dirtied == backup.id).delete()
# self.db_session.commit()
book = self.calibre_db.session.query(db.Books).filter(db.Books.id == backup.book).one_or_none()
# self.calibre_db.session.query(db.Metadata_Dirtied).filter(db.Metadata_Dirtied == backup.id).delete()
# self.calibre_db.session.commit()
if book:
metadata_file = self.open_metadata(book, custom_columns)
self.open_metadata(book, custom_columns)
self._handleSuccess()
self.db_session.remove()
self.calibre_db.session.close()
else:
self.log.error("Book {} not found in database".format(backup.book))
self._handleError("Book {} not found in database".format(backup.book))
self.db_session.remove()
self.calibre_db.session.close()
except Exception as ex:
self.log.debug('Error creating metadata backup: ' + str(ex))
self._handleError('Error creating metadata backup: ' + str(ex))
self.db_session.rollback()
self.db_session.remove()
self.calibre_db.session.rollback()
self.calibre_db.session.close()
def open_metadata(self, book, custom_columns):
if config.config_use_google_drive:
@ -89,13 +91,27 @@ class TaskBackupMetadata(CalibreTask):
if stream is not None:
stream.close()
else:
# ToDo: Handle book folder not found or not readable
book_metadata_filepath = os.path.join(config.config_calibre_dir, book.path, 'metadata.opf')
if not os.path.isfile(book_metadata_filepath):
self.create_new_metadata_backup(book, custom_columns, book_metadata_filepath)
# ToDo What to do
return open(book_metadata_filepath, "w")
else:
etree.parse(book_metadata_filepath)
#if not os.path.isfile(book_metadata_filepath):
self.create_new_metadata_backup(book, custom_columns, book_metadata_filepath)
# else:
'''namespaces = {'dc': PURL_NAMESPACE, 'opf': OPF_NAMESPACE}
test = etree.parse(book_metadata_filepath)
root = test.getroot()
for i in root.iter():
self.log.info(i)
title = root.find("dc:metadata", namespaces)
pass'''
with open(book_metadata_filepath, "rb") as f:
xml = f.read()
root = objectify.fromstring(xml)
# root.metadata['{http://purl.org/dc/elements/1.1/}title']
# root.metadata[PURL + 'title']
# getattr(root.metadata, PURL +'title')
# test = objectify.parse()
pass
# backup not found has to be created
#raise Exception('Book cover file not found')
@ -124,16 +140,23 @@ class TaskBackupMetadata(CalibreTask):
contributor.text = "calibre (5.7.2) [https://calibre-ebook.com]"
contributor.set(OPF + "file-as", "calibre") # ToDo Check
contributor.set(OPF + "role", "bpk")
date = etree.SubElement(metadata, PURL + "date", nsmap=NSMAP)
date.text = datetime.datetime.strftime(book.pubdate, "%Y-%m-%dT%H:%M:%S+00:00")
language = etree.SubElement(metadata, PURL + "language", nsmap=NSMAP)
if book.languages:
language.text = str(book.languages)
date.text = '{d.year:04}-{d.month:02}-{d.day:02}T{d.hour:02}:{d.minute:02}:{d.second:02}'.format(d=book.pubdate)
if not book.languages:
language = etree.SubElement(metadata, PURL + "language", nsmap=NSMAP)
language.text = self.export_language
else:
language.text = "" # ToDo: insert locale (2 letter code)
if book.tags:
for b in book.languages:
language = etree.SubElement(metadata, PURL + "language", nsmap=NSMAP)
language.text = str(b.languages)
for b in book.tags:
subject = etree.SubElement(metadata, PURL + "subject", nsmap=NSMAP)
subject.text = str(book.tags)
subject.text = str(b.tags)
if book.comments:
description = etree.SubElement(metadata, PURL + "description", nsmap=NSMAP)
description.text = escape(str(book.comments))
etree.SubElement(metadata, "meta", name="calibre:author_link_map",
content="{" + escape(",".join(['"' + str(a) + '":""' for a in book.authors])) + "}",
nsmap=NSMAP)
@ -144,27 +167,36 @@ class TaskBackupMetadata(CalibreTask):
content=str(book.series_index),
nsmap=NSMAP)
etree.SubElement(metadata, "meta", name="calibre:timestamp",
content=datetime.datetime.strftime(book.timestamp, "%Y-%m-%dT%H:%M:%S+00:00"),
content='{d.year:04}-{d.month:02}-{d.day:02}T{d.hour:02}:{d.minute:02}:{d.second:02}'.format(
d=book.timestamp),
nsmap=NSMAP)
etree.SubElement(metadata, "meta", name="calibre:title_sort",
content=book.sort,
nsmap=NSMAP)
for cc in custom_columns:
value = None
extra = None
cc_entry = getattr(book, "custom_column_" + str(cc.id))
if cc_entry.__len__():
value = cc_entry[0].get("value")
extra = cc_entry[0].get("extra")
etree.SubElement(metadata, "meta", name="calibre:user_metadata:#{}".format(cc.label),
content=escape(cc.get_display_dict()),
content=escape(cc.to_json(value, extra)),
nsmap=NSMAP)
pass
# generate guide element and all sub elements of it
# Title is translated from default export language
guide = etree.SubElement(package, "guide")
etree.SubElement(guide, "reference", type="cover", title="Titelbild", href="cover.jpg")
etree.SubElement(guide, "reference", type="cover", title=self.translated_title, href="cover.jpg")
# prepare finalize everything and output
doc = etree.ElementTree(package)
with open(book_metadata_filepath, 'wb') as f:
doc.write(f, xml_declaration=True, encoding='utf-8', pretty_print=True)
try:
with open(book_metadata_filepath, 'wb') as f:
doc.write(f, xml_declaration=True, encoding='utf-8', pretty_print=True)
except Exception:
# ToDo: Folder not writeable errror
pass
@property
def name(self):
return "Backing up Metadata"