Added thumbnails
Merge remote-tracking branch 'cover/thumbnails' into development # Conflicts: # cps/admin.py # cps/templates/layout.html # cps/ub.py # cps/web.py Update join for sqlalchemy 1.4pull/1771/head
Ozzie Isaacs
3 years ago
parent
5d8d796807
commit
dd30ac4fbd
@ -0,0 +1,61 @@
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# -*- 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 mmonkey
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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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from __future__ import division, print_function, unicode_literals
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from .constants import CACHE_DIR
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from os import listdir, makedirs, remove
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from os.path import isdir, isfile, join
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from shutil import rmtree
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CACHE_TYPE_THUMBNAILS = 'thumbnails'
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class FileSystem:
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_instance = None
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_cache_dir = CACHE_DIR
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def __new__(cls):
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if cls._instance is None:
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cls._instance = super(FileSystem, cls).__new__(cls)
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return cls._instance
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def get_cache_dir(self, cache_type=None):
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if not isdir(self._cache_dir):
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makedirs(self._cache_dir)
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if cache_type and not isdir(join(self._cache_dir, cache_type)):
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makedirs(join(self._cache_dir, cache_type))
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return join(self._cache_dir, cache_type) if cache_type else self._cache_dir
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def get_cache_file_path(self, filename, cache_type=None):
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return join(self.get_cache_dir(cache_type), filename) if filename else None
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def list_cache_files(self, cache_type=None):
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path = self.get_cache_dir(cache_type)
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return [file for file in listdir(path) if isfile(join(path, file))]
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def delete_cache_dir(self, cache_type=None):
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if not cache_type and isdir(self._cache_dir):
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rmtree(self._cache_dir)
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if cache_type and isdir(join(self._cache_dir, cache_type)):
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rmtree(join(self._cache_dir, cache_type))
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def delete_cache_file(self, filename, cache_type=None):
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if isfile(join(self.get_cache_dir(cache_type), filename)):
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remove(join(self.get_cache_dir(cache_type), filename))
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@ -0,0 +1,36 @@
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# -*- 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 mmonkey
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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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from __future__ import division, print_function, unicode_literals
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from .services.background_scheduler import BackgroundScheduler
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from .tasks.database import TaskReconnectDatabase
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from .tasks.thumbnail import TaskSyncCoverThumbnailCache, TaskGenerateCoverThumbnails
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def register_jobs():
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scheduler = BackgroundScheduler()
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# Generate 100 book cover thumbnails every 5 minutes
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scheduler.add_task(user=None, task=lambda: TaskGenerateCoverThumbnails(limit=100), trigger='cron', minute='*/5')
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# Cleanup book cover cache every 6 hours
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scheduler.add_task(user=None, task=lambda: TaskSyncCoverThumbnailCache(), trigger='cron', minute='15', hour='*/6')
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# Reconnect metadata.db every 4 hours
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scheduler.add_task(user=None, task=lambda: TaskReconnectDatabase(), trigger='cron', minute='5', hour='*/4')
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@ -0,0 +1,52 @@
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# -*- 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 mmonkey
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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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from __future__ import division, print_function, unicode_literals
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import atexit
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from .. import logger
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from .worker import WorkerThread
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from apscheduler.schedulers.background import BackgroundScheduler as BScheduler
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class BackgroundScheduler:
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_instance = None
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def __new__(cls):
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if cls._instance is None:
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cls._instance = super(BackgroundScheduler, cls).__new__(cls)
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scheduler = BScheduler()
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atexit.register(lambda: scheduler.shutdown())
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cls.log = logger.create()
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cls.scheduler = scheduler
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cls.scheduler.start()
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return cls._instance
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def add(self, func, trigger, **trigger_args):
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self.scheduler.add_job(func=func, trigger=trigger, **trigger_args)
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def add_task(self, user, task, trigger, **trigger_args):
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def scheduled_task():
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worker_task = task()
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self.log.info('Running scheduled task in background: ' + worker_task.name + ': ' + worker_task.message)
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WorkerThread.add(user, worker_task)
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self.add(func=scheduled_task, trigger=trigger, **trigger_args)
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@ -0,0 +1,49 @@
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# -*- 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 mmonkey
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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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from __future__ import division, print_function, unicode_literals
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from cps import config, logger
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from cps.services.worker import CalibreTask
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try:
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from urllib.request import urlopen
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except ImportError as e:
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from urllib2 import urlopen
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class TaskReconnectDatabase(CalibreTask):
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def __init__(self, task_message=u'Reconnecting Calibre database'):
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super(TaskReconnectDatabase, self).__init__(task_message)
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self.log = logger.create()
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self.listen_address = config.get_config_ipaddress()
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self.listen_port = config.config_port
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def run(self, worker_thread):
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address = self.listen_address if self.listen_address else 'localhost'
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port = self.listen_port if self.listen_port else 8083
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try:
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urlopen('http://' + address + ':' + str(port) + '/reconnect')
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self._handleSuccess()
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except Exception as ex:
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self._handleError(u'Unable to reconnect Calibre database: ' + str(ex))
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@property
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def name(self):
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return "Reconnect Database"
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@ -0,0 +1,366 @@
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# -*- 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 mmonkey
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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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from __future__ import division, print_function, unicode_literals
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import os
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from cps import config, db, fs, gdriveutils, logger, ub
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from cps.services.worker import CalibreTask
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from datetime import datetime, timedelta
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from sqlalchemy import func
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try:
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from urllib.request import urlopen
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except ImportError as e:
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from urllib2 import urlopen
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try:
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from wand.image import Image
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use_IM = True
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except (ImportError, RuntimeError) as e:
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use_IM = False
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THUMBNAIL_RESOLUTION_1X = 1
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THUMBNAIL_RESOLUTION_2X = 2
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class TaskGenerateCoverThumbnails(CalibreTask):
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def __init__(self, limit=100, task_message=u'Generating cover thumbnails'):
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super(TaskGenerateCoverThumbnails, self).__init__(task_message)
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self.limit = limit
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self.log = logger.create()
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self.app_db_session = ub.get_new_session_instance()
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self.calibre_db = db.CalibreDB(expire_on_commit=False)
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self.cache = fs.FileSystem()
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self.resolutions = [
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THUMBNAIL_RESOLUTION_1X,
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THUMBNAIL_RESOLUTION_2X
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]
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def run(self, worker_thread):
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if self.calibre_db.session and use_IM:
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expired_thumbnails = self.get_expired_thumbnails()
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thumbnail_book_ids = self.get_thumbnail_book_ids()
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books_without_thumbnails = self.get_books_without_thumbnails(thumbnail_book_ids)
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count = len(books_without_thumbnails)
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if count == 0:
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# Do not display this task on the frontend if there are no covers to update
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self.self_cleanup = True
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for i, book in enumerate(books_without_thumbnails):
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for resolution in self.resolutions:
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expired_thumbnail = self.get_expired_thumbnail_for_book_and_resolution(
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book,
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resolution,
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expired_thumbnails
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)
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if expired_thumbnail:
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self.update_book_thumbnail(book, expired_thumbnail)
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else:
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self.create_book_thumbnail(book, resolution)
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self.message = u'Generating cover thumbnail {0} of {1}'.format(i + 1, count)
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self.progress = (1.0 / count) * i
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self._handleSuccess()
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self.app_db_session.remove()
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def get_expired_thumbnails(self):
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return self.app_db_session\
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.query(ub.Thumbnail)\
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.filter(ub.Thumbnail.expiration < datetime.utcnow())\
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.all()
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def get_thumbnail_book_ids(self):
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return self.app_db_session\
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.query(ub.Thumbnail.book_id)\
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.group_by(ub.Thumbnail.book_id)\
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.having(func.min(ub.Thumbnail.expiration) > datetime.utcnow())\
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.distinct()
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def get_books_without_thumbnails(self, thumbnail_book_ids):
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return self.calibre_db.session\
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.query(db.Books)\
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.filter(db.Books.has_cover == 1)\
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.filter(db.Books.id.notin_(thumbnail_book_ids))\
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.limit(self.limit)\
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.all()
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def get_expired_thumbnail_for_book_and_resolution(self, book, resolution, expired_thumbnails):
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for thumbnail in expired_thumbnails:
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if thumbnail.book_id == book.id and thumbnail.resolution == resolution:
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return thumbnail
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return None
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def update_book_thumbnail(self, book, thumbnail):
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thumbnail.generated_at = datetime.utcnow()
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thumbnail.expiration = datetime.utcnow() + timedelta(days=30)
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try:
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self.app_db_session.commit()
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self.generate_book_thumbnail(book, thumbnail)
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except Exception as ex:
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self.log.info(u'Error updating book thumbnail: ' + str(ex))
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self._handleError(u'Error updating book thumbnail: ' + str(ex))
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self.app_db_session.rollback()
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def create_book_thumbnail(self, book, resolution):
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thumbnail = ub.Thumbnail()
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thumbnail.book_id = book.id
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thumbnail.format = 'jpeg'
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thumbnail.resolution = resolution
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self.app_db_session.add(thumbnail)
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try:
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self.app_db_session.commit()
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self.generate_book_thumbnail(book, thumbnail)
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except Exception as ex:
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self.log.info(u'Error creating book thumbnail: ' + str(ex))
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self._handleError(u'Error creating book thumbnail: ' + str(ex))
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self.app_db_session.rollback()
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def generate_book_thumbnail(self, book, thumbnail):
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if book and thumbnail:
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if config.config_use_google_drive:
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if not gdriveutils.is_gdrive_ready():
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raise Exception('Google Drive is configured but not ready')
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web_content_link = gdriveutils.get_cover_via_gdrive(book.path)
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if not web_content_link:
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raise Exception('Google Drive cover url not found')
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stream = None
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try:
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stream = urlopen(web_content_link)
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with Image(file=stream) as img:
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height = self.get_thumbnail_height(thumbnail)
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if img.height > height:
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width = self.get_thumbnail_width(height, img)
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img.resize(width=width, height=height, filter='lanczos')
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img.format = thumbnail.format
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filename = self.cache.get_cache_file_path(thumbnail.filename, fs.CACHE_TYPE_THUMBNAILS)
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img.save(filename=filename)
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except Exception as ex:
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# Bubble exception to calling function
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self.log.info(u'Error generating thumbnail file: ' + str(ex))
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raise ex
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finally:
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stream.close()
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else:
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book_cover_filepath = os.path.join(config.config_calibre_dir, book.path, 'cover.jpg')
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if not os.path.isfile(book_cover_filepath):
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raise Exception('Book cover file not found')
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with Image(filename=book_cover_filepath) as img:
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height = self.get_thumbnail_height(thumbnail)
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if img.height > height:
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width = self.get_thumbnail_width(height, img)
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img.resize(width=width, height=height, filter='lanczos')
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img.format = thumbnail.format
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filename = self.cache.get_cache_file_path(thumbnail.filename, fs.CACHE_TYPE_THUMBNAILS)
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img.save(filename=filename)
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def get_thumbnail_height(self, thumbnail):
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return int(225 * thumbnail.resolution)
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def get_thumbnail_width(self, height, img):
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percent = (height / float(img.height))
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return int((float(img.width) * float(percent)))
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|
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@property
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def name(self):
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return "ThumbnailsGenerate"
|
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|
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|
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class TaskSyncCoverThumbnailCache(CalibreTask):
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def __init__(self, task_message=u'Syncing cover thumbnail cache'):
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super(TaskSyncCoverThumbnailCache, self).__init__(task_message)
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self.log = logger.create()
|
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self.app_db_session = ub.get_new_session_instance()
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self.calibre_db = db.CalibreDB(expire_on_commit=False)
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self.cache = fs.FileSystem()
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def run(self, worker_thread):
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cached_thumbnail_files = self.cache.list_cache_files(fs.CACHE_TYPE_THUMBNAILS)
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# Expire thumbnails in the database if the cached file is missing
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# This case will happen if a user deletes the cache dir or cached files
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if self.app_db_session:
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self.expire_missing_thumbnails(cached_thumbnail_files)
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self.progress = 0.25
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# Delete thumbnails in the database if the book has been removed
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# This case will happen if a book is removed in Calibre and the metadata.db file is updated in the filesystem
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if self.app_db_session and self.calibre_db:
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book_ids = self.get_book_ids()
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self.delete_thumbnails_for_missing_books(book_ids)
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self.progress = 0.50
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|
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# Expire thumbnails in the database if their corresponding book has been updated since they were generated
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# This case will happen if the book was updated externally
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if self.app_db_session and self.cache:
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books = self.get_books_updated_in_the_last_day()
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book_ids = list(map(lambda b: b.id, books))
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thumbnails = self.get_thumbnails_for_updated_books(book_ids)
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self.expire_thumbnails_for_updated_book(books, thumbnails)
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self.progress = 0.75
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|
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# Delete extraneous cached thumbnail files
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# This case will happen if a book was deleted and the thumbnail OR the metadata.db file was changed externally
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if self.app_db_session:
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db_thumbnail_files = self.get_thumbnail_filenames()
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self.delete_extraneous_thumbnail_files(cached_thumbnail_files, db_thumbnail_files)
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self._handleSuccess()
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self.app_db_session.remove()
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|
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def expire_missing_thumbnails(self, filenames):
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||||
try:
|
||||
self.app_db_session\
|
||||
.query(ub.Thumbnail)\
|
||||
.filter(ub.Thumbnail.filename.notin_(filenames))\
|
||||
.update({"expiration": datetime.utcnow()}, synchronize_session=False)
|
||||
self.app_db_session.commit()
|
||||
except Exception as ex:
|
||||
self.log.info(u'Error expiring thumbnails for missing cache files: ' + str(ex))
|
||||
self._handleError(u'Error expiring thumbnails for missing cache files: ' + str(ex))
|
||||
self.app_db_session.rollback()
|
||||
|
||||
def get_book_ids(self):
|
||||
results = self.calibre_db.session\
|
||||
.query(db.Books.id)\
|
||||
.filter(db.Books.has_cover == 1)\
|
||||
.distinct()
|
||||
|
||||
return [value for value, in results]
|
||||
|
||||
def delete_thumbnails_for_missing_books(self, book_ids):
|
||||
try:
|
||||
self.app_db_session\
|
||||
.query(ub.Thumbnail)\
|
||||
.filter(ub.Thumbnail.book_id.notin_(book_ids))\
|
||||
.delete(synchronize_session=False)
|
||||
self.app_db_session.commit()
|
||||
except Exception as ex:
|
||||
self.log.info(str(ex))
|
||||
self._handleError(u'Error deleting thumbnails for missing books: ' + str(ex))
|
||||
self.app_db_session.rollback()
|
||||
|
||||
def get_thumbnail_filenames(self):
|
||||
results = self.app_db_session\
|
||||
.query(ub.Thumbnail.filename)\
|
||||
.all()
|
||||
|
||||
return [thumbnail for thumbnail, in results]
|
||||
|
||||
def delete_extraneous_thumbnail_files(self, cached_thumbnail_files, db_thumbnail_files):
|
||||
extraneous_files = list(set(cached_thumbnail_files).difference(db_thumbnail_files))
|
||||
for file in extraneous_files:
|
||||
self.cache.delete_cache_file(file, fs.CACHE_TYPE_THUMBNAILS)
|
||||
|
||||
def get_books_updated_in_the_last_day(self):
|
||||
return self.calibre_db.session\
|
||||
.query(db.Books)\
|
||||
.filter(db.Books.has_cover == 1)\
|
||||
.filter(db.Books.last_modified > datetime.utcnow() - timedelta(days=1, hours=1))\
|
||||
.all()
|
||||
|
||||
def get_thumbnails_for_updated_books(self, book_ids):
|
||||
return self.app_db_session\
|
||||
.query(ub.Thumbnail)\
|
||||
.filter(ub.Thumbnail.book_id.in_(book_ids))\
|
||||
.all()
|
||||
|
||||
def expire_thumbnails_for_updated_book(self, books, thumbnails):
|
||||
thumbnail_ids = list()
|
||||
for book in books:
|
||||
for thumbnail in thumbnails:
|
||||
if thumbnail.book_id == book.id and thumbnail.generated_at < book.last_modified:
|
||||
thumbnail_ids.append(thumbnail.id)
|
||||
|
||||
try:
|
||||
self.app_db_session\
|
||||
.query(ub.Thumbnail)\
|
||||
.filter(ub.Thumbnail.id.in_(thumbnail_ids)) \
|
||||
.update({"expiration": datetime.utcnow()}, synchronize_session=False)
|
||||
self.app_db_session.commit()
|
||||
except Exception as ex:
|
||||
self.log.info(u'Error expiring thumbnails for updated books: ' + str(ex))
|
||||
self._handleError(u'Error expiring thumbnails for updated books: ' + str(ex))
|
||||
self.app_db_session.rollback()
|
||||
|
||||
@property
|
||||
def name(self):
|
||||
return "ThumbnailsSync"
|
||||
|
||||
|
||||
class TaskClearCoverThumbnailCache(CalibreTask):
|
||||
def __init__(self, book_id=None, task_message=u'Clearing cover thumbnail cache'):
|
||||
super(TaskClearCoverThumbnailCache, self).__init__(task_message)
|
||||
self.log = logger.create()
|
||||
self.book_id = book_id
|
||||
self.app_db_session = ub.get_new_session_instance()
|
||||
self.cache = fs.FileSystem()
|
||||
|
||||
def run(self, worker_thread):
|
||||
if self.app_db_session:
|
||||
if self.book_id:
|
||||
thumbnails = self.get_thumbnails_for_book(self.book_id)
|
||||
for thumbnail in thumbnails:
|
||||
self.expire_and_delete_thumbnail(thumbnail)
|
||||
else:
|
||||
self.expire_and_delete_all_thumbnails()
|
||||
|
||||
self._handleSuccess()
|
||||
self.app_db_session.remove()
|
||||
|
||||
def get_thumbnails_for_book(self, book_id):
|
||||
return self.app_db_session\
|
||||
.query(ub.Thumbnail)\
|
||||
.filter(ub.Thumbnail.book_id == book_id)\
|
||||
.all()
|
||||
|
||||
def expire_and_delete_thumbnail(self, thumbnail):
|
||||
thumbnail.expiration = datetime.utcnow()
|
||||
|
||||
try:
|
||||
self.app_db_session.commit()
|
||||
self.cache.delete_cache_file(thumbnail.filename, fs.CACHE_TYPE_THUMBNAILS)
|
||||
except Exception as ex:
|
||||
self.log.info(u'Error expiring book thumbnail: ' + str(ex))
|
||||
self._handleError(u'Error expiring book thumbnail: ' + str(ex))
|
||||
self.app_db_session.rollback()
|
||||
|
||||
def expire_and_delete_all_thumbnails(self):
|
||||
self.app_db_session\
|
||||
.query(ub.Thumbnail)\
|
||||
.update({'expiration': datetime.utcnow()})
|
||||
|
||||
try:
|
||||
self.app_db_session.commit()
|
||||
self.cache.delete_cache_dir(fs.CACHE_TYPE_THUMBNAILS)
|
||||
except Exception as ex:
|
||||
self.log.info(u'Error expiring book thumbnails: ' + str(ex))
|
||||
self._handleError(u'Error expiring book thumbnails: ' + str(ex))
|
||||
self.app_db_session.rollback()
|
||||
|
||||
@property
|
||||
def name(self):
|
||||
return "ThumbnailsClear"
|
||||
@ -0,0 +1,13 @@
|
||||
{% macro book_cover_image(book, thumbnails) -%}
|
||||
{%- set book_title = book.title if book.title else book.name -%}
|
||||
{% set srcset = thumbnails|get_book_thumbnail_srcset if thumbnails|length else '' %}
|
||||
{%- if srcset|length -%}
|
||||
<img
|
||||
srcset="{{ srcset }}"
|
||||
src="{{ url_for('web.get_cached_cover', cache_id=book|book_cover_cache_id) }}"
|
||||
alt="{{ book_title }}"
|
||||
/>
|
||||
{%- else -%}
|
||||
<img src="{{ url_for('web.get_cached_cover', cache_id=book|book_cover_cache_id) }}" alt="{{ book_title }}" />
|
||||
{%- endif -%}
|
||||
{%- endmacro %}
|
||||
Loading…
Reference in New Issue