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upload_manager.py
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__copyright__ = '2020, BookFusion <[email protected]>'
__license__ = 'GPL v3'
from PyQt5.Qt import QObject, pyqtSignal, QThread
from calibre_plugins.bookfusion.config import prefs
from calibre_plugins.bookfusion.book_format import BookFormat
from calibre_plugins.bookfusion.upload_worker import UploadWorker
class UploadManager(QObject):
finished = pyqtSignal()
readyForNext = pyqtSignal()
progress = pyqtSignal(int)
uploadProgress = pyqtSignal(int, int, int)
started = pyqtSignal(int)
uploaded = pyqtSignal(int)
updated = pyqtSignal(int)
skipped = pyqtSignal(int)
failed = pyqtSignal(int, str)
aborted = pyqtSignal(str)
def __init__(self, db, logger, book_ids):
QObject.__init__(self)
self.db = db
self.logger = logger
self.pending_book_ids = book_ids
self.canceled = False
self.finished_count = 0
self.workers = []
def start(self):
self.readyForNext.connect(self.sync)
for index in range(prefs['threads']):
thread = QThread(self)
self.finished.connect(thread.quit)
worker = UploadWorker(index, self.db, self.logger)
worker.readyForNext.connect(self.sync)
worker.uploadProgress.connect(self.uploadProgress)
worker.uploaded.connect(self.uploaded)
worker.updated.connect(self.updated)
worker.skipped.connect(self.skipped)
worker.failed.connect(self.failed)
worker.aborted.connect(self.abort)
thread.started.connect(worker.start)
thread.start()
self.workers.append([worker, thread])
self.count = 0
def cancel(self):
self.canceled = True
for worker, _ in self.workers:
worker.cancel()
self.finished.emit()
def sync(self, index):
if len(self.pending_book_ids) == 0:
self.finished_count += 1
if self.finished_count == len(self.workers):
self.finished.emit()
return
self.progress.emit(self.count)
self.count += 1
book_id = self.pending_book_ids.pop()
self.logger.info('Upload book: book_id={}; title={}'.format(book_id, self.db.get_proxy_metadata(book_id).title))
book_format = BookFormat(self.db, book_id)
if book_format.file_path:
self.started.emit(book_id)
worker, _ = self.workers[index]
worker.sync(book_id, book_format.file_path)
else:
self.failed.emit(book_id, 'unsupported format')
self.readyForNext.emit(index)
def abort(self, msg):
self.cancel()
self.aborted.emit(msg)