mirror of
https://github.com/janeczku/calibre-web
synced 2024-12-19 14:40:30 +00:00
f85b587d0a
Added error logging message if convert fails If convert only task, only convert book message is logged
286 lines
13 KiB
Python
Executable File
286 lines
13 KiB
Python
Executable File
# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2020 pwr
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import re
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from glob import glob
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from shutil import copyfile
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from markupsafe import escape
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from sqlalchemy.exc import SQLAlchemyError
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from flask_babel import lazy_gettext as N_
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from cps.services.worker import CalibreTask
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from cps import db
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from cps import logger, config
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from cps.subproc_wrapper import process_open
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from flask_babel import gettext as _
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from cps.kobo_sync_status import remove_synced_book
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from cps.ub import init_db_thread
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from cps.tasks.mail import TaskEmail
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from cps import gdriveutils
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log = logger.create()
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class TaskConvert(CalibreTask):
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def __init__(self, file_path, book_id, task_message, settings, ereader_mail, user=None):
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super(TaskConvert, self).__init__(task_message)
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self.file_path = file_path
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self.book_id = book_id
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self.title = ""
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self.settings = settings
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self.ereader_mail = ereader_mail
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self.user = user
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self.results = dict()
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def run(self, worker_thread):
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self.worker_thread = worker_thread
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if config.config_use_google_drive:
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worker_db = db.CalibreDB(expire_on_commit=False, init=True)
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cur_book = worker_db.get_book(self.book_id)
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self.title = cur_book.title
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data = worker_db.get_book_format(self.book_id, self.settings['old_book_format'])
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df = gdriveutils.getFileFromEbooksFolder(cur_book.path,
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data.name + "." + self.settings['old_book_format'].lower())
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if df:
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datafile = os.path.join(config.config_calibre_dir,
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cur_book.path,
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data.name + u"." + self.settings['old_book_format'].lower())
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if not os.path.exists(os.path.join(config.config_calibre_dir, cur_book.path)):
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os.makedirs(os.path.join(config.config_calibre_dir, cur_book.path))
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df.GetContentFile(datafile)
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worker_db.session.close()
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else:
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error_message = _(u"%(format)s not found on Google Drive: %(fn)s",
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format=self.settings['old_book_format'],
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fn=data.name + "." + self.settings['old_book_format'].lower())
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worker_db.session.close()
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return error_message
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filename = self._convert_ebook_format()
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if config.config_use_google_drive:
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os.remove(self.file_path + u'.' + self.settings['old_book_format'].lower())
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if filename:
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if config.config_use_google_drive:
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# Upload files to gdrive
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gdriveutils.updateGdriveCalibreFromLocal()
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self._handleSuccess()
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if self.ereader_mail:
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# if we're sending to E-Reader after converting, create a one-off task and run it immediately
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# todo: figure out how to incorporate this into the progress
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try:
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EmailText = N_(u"%(book)s send to E-Reader", book=escape(self.title))
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worker_thread.add(self.user, TaskEmail(self.settings['subject'],
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self.results["path"],
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filename,
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self.settings,
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self.ereader_mail,
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EmailText,
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self.settings['body'],
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internal=True)
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)
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except Exception as ex:
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return self._handleError(str(ex))
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def _convert_ebook_format(self):
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error_message = None
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local_db = db.CalibreDB(expire_on_commit=False, init=True)
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file_path = self.file_path
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book_id = self.book_id
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format_old_ext = u'.' + self.settings['old_book_format'].lower()
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format_new_ext = u'.' + self.settings['new_book_format'].lower()
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# check to see if destination format already exists - or if book is in database
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# if it does - mark the conversion task as complete and return a success
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# this will allow send to E-Reader workflow to continue to work
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if os.path.isfile(file_path + format_new_ext) or\
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local_db.get_book_format(self.book_id, self.settings['new_book_format']):
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log.info("Book id %d already converted to %s", book_id, format_new_ext)
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cur_book = local_db.get_book(book_id)
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self.title = cur_book.title
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self.results['path'] = cur_book.path
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self.results['title'] = self.title
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new_format = local_db.session.query(db.Data).filter(db.Data.book == book_id)\
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.filter(db.Data.format == self.settings['new_book_format'].upper()).one_or_none()
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if not new_format:
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new_format = db.Data(name=os.path.basename(file_path),
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book_format=self.settings['new_book_format'].upper(),
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book=book_id, uncompressed_size=os.path.getsize(file_path + format_new_ext))
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try:
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local_db.session.merge(new_format)
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local_db.session.commit()
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except SQLAlchemyError as e:
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local_db.session.rollback()
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log.error("Database error: %s", e)
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local_db.session.close()
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self._handleError(N_("Database error: %(error)s.", error=e))
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return
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self._handleSuccess()
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local_db.session.close()
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return os.path.basename(file_path + format_new_ext)
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else:
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log.info("Book id %d - target format of %s does not exist. Moving forward with convert.",
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book_id,
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format_new_ext)
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if config.config_kepubifypath and format_old_ext == '.epub' and format_new_ext == '.kepub':
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check, error_message = self._convert_kepubify(file_path,
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format_old_ext,
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format_new_ext)
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else:
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# check if calibre converter-executable is existing
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if not os.path.exists(config.config_converterpath):
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self._handleError(N_(u"Calibre ebook-convert %(tool)s not found", tool=config.config_converterpath))
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return
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check, error_message = self._convert_calibre(file_path, format_old_ext, format_new_ext)
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if check == 0:
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cur_book = local_db.get_book(book_id)
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if os.path.isfile(file_path + format_new_ext):
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new_format = local_db.session.query(db.Data).filter(db.Data.book == book_id) \
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.filter(db.Data.format == self.settings['new_book_format'].upper()).one_or_none()
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if not new_format:
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new_format = db.Data(name=cur_book.data[0].name,
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book_format=self.settings['new_book_format'].upper(),
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book=book_id, uncompressed_size=os.path.getsize(file_path + format_new_ext))
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try:
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local_db.session.merge(new_format)
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local_db.session.commit()
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if self.settings['new_book_format'].upper() in ['KEPUB', 'EPUB', 'EPUB3']:
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ub_session = init_db_thread()
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remove_synced_book(book_id, True, ub_session)
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ub_session.close()
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except SQLAlchemyError as e:
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local_db.session.rollback()
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log.error("Database error: %s", e)
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local_db.session.close()
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self._handleError(error_message)
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return
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self.results['path'] = cur_book.path
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self.title = cur_book.title
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self.results['title'] = self.title
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if not config.config_use_google_drive:
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self._handleSuccess()
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return os.path.basename(file_path + format_new_ext)
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else:
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error_message = N_('%(format)s format not found on disk', format=format_new_ext.upper())
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local_db.session.close()
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log.info("ebook converter failed with error while converting book")
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if not error_message:
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error_message = N_('Ebook converter failed with unknown error')
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else:
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log.error(error_message)
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self._handleError(error_message)
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return
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def _convert_kepubify(self, file_path, format_old_ext, format_new_ext):
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quotes = [1, 3]
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command = [config.config_kepubifypath, (file_path + format_old_ext), '-o', os.path.dirname(file_path)]
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try:
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p = process_open(command, quotes)
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except OSError as e:
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return 1, N_(u"Kepubify-converter failed: %(error)s", error=e)
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self.progress = 0.01
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while True:
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nextline = p.stdout.readlines()
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nextline = [x.strip('\n') for x in nextline if x != '\n']
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for line in nextline:
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log.debug(line)
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if p.poll() is not None:
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break
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# ToD Handle
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# process returncode
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check = p.returncode
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# move file
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if check == 0:
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converted_file = glob(os.path.join(os.path.dirname(file_path), "*.kepub.epub"))
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if len(converted_file) == 1:
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copyfile(converted_file[0], (file_path + format_new_ext))
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os.unlink(converted_file[0])
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else:
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return 1, N_(u"Converted file not found or more than one file in folder %(folder)s",
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folder=os.path.dirname(file_path))
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return check, None
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def _convert_calibre(self, file_path, format_old_ext, format_new_ext):
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try:
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# Linux py2.7 encode as list without quotes no empty element for parameters
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# linux py3.x no encode and as list without quotes no empty element for parameters
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# windows py2.7 encode as string with quotes empty element for parameters is okay
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# windows py 3.x no encode and as string with quotes empty element for parameters is okay
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# separate handling for windows and linux
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quotes = [1, 2]
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command = [config.config_converterpath, (file_path + format_old_ext),
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(file_path + format_new_ext)]
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quotes_index = 3
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if config.config_calibre:
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parameters = config.config_calibre.split(" ")
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for param in parameters:
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command.append(param)
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quotes.append(quotes_index)
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quotes_index += 1
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p = process_open(command, quotes, newlines=False)
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except OSError as e:
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return 1, N_(u"Ebook-converter failed: %(error)s", error=e)
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while p.poll() is None:
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nextline = p.stdout.readline()
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if isinstance(nextline, bytes):
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nextline = nextline.decode('utf-8', errors="ignore").strip('\r\n')
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if nextline:
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log.debug(nextline)
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# parse progress string from calibre-converter
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progress = re.search(r"(\d+)%\s.*", nextline)
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if progress:
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self.progress = int(progress.group(1)) / 100
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if config.config_use_google_drive:
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self.progress *= 0.9
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# process returncode
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check = p.returncode
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calibre_traceback = p.stderr.readlines()
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error_message = ""
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for ele in calibre_traceback:
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ele = ele.decode('utf-8', errors="ignore").strip('\n')
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log.debug(ele)
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if not ele.startswith('Traceback') and not ele.startswith(' File'):
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error_message = N_("Calibre failed with error: %(error)s", error=ele)
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return check, error_message
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@property
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def name(self):
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return N_("Convert")
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def __str__(self):
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if self.ereader_mail:
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return "Convert {} {}".format(self.book_id, self.ereader_mail)
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else:
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return "Convert {}".format(self.book_id)
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@property
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def is_cancellable(self):
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return False
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