def finishedCallback(reply: QNetworkReply) -> None:
progress_message.hide()
try:
with open(os.path.join(temp_dir, file_name),
"wb+") as temp_file:
bytes_read = reply.read(self.DISK_WRITE_BUFFER_SIZE)
while bytes_read:
temp_file.write(bytes_read)
bytes_read = reply.read(self.DISK_WRITE_BUFFER_SIZE)
CuraApplication.getInstance().processEvents()
temp_file_name = temp_file.name
except IOError as ex:
Logger.logException(
"e",
"Can't write Digital Library file {0}/{1} download to temp-directory {2}.",
ex, project_name, file_name, temp_dir)
Message(
text="Failed to write to temporary file for '{}'.".format(
file_name),
title="File-system error",
lifetime=10).show()
return
CuraApplication.getInstance().readLocalFile(
QUrl.fromLocalFile(temp_file_name), add_to_recent_files=False)
def _onFinished(self, package_id: str, reply: QNetworkReply) -> None:
self._progress[package_id]["received"] = self._progress[package_id]["total"]
try:
with tempfile.NamedTemporaryFile(mode = "wb+", suffix = ".curapackage", delete = False) as temp_file:
bytes_read = reply.read(self.DISK_WRITE_BUFFER_SIZE)
while bytes_read:
temp_file.write(bytes_read)
bytes_read = reply.read(self.DISK_WRITE_BUFFER_SIZE)
self._app.processEvents()
self._progress[package_id]["file_written"] = temp_file.name
except IOError as e:
Logger.logException("e", "Failed to write downloaded package to temp file", e)
self._onError(package_id)
temp_file.close()
self._checkDone()
def _onRestoreRequestCompleted(
self,
reply: QNetworkReply,
error: Optional["QNetworkReply.NetworkError"] = None) -> None:
if not HttpRequestManager.replyIndicatesSuccess(reply, error):
Logger.warning(
"Requesting backup failed, response code %s while trying to connect to %s",
reply.attribute(QNetworkRequest.HttpStatusCodeAttribute),
reply.url())
self.restore_backup_error_message = self.DEFAULT_ERROR_MESSAGE
self._job_done.set()
return
# We store the file in a temporary path fist to ensure integrity.
temporary_backup_file = NamedTemporaryFile(delete=False)
with open(temporary_backup_file.name, "wb") as write_backup:
app = CuraApplication.getInstance()
bytes_read = reply.read(self.DISK_WRITE_BUFFER_SIZE)
while bytes_read:
write_backup.write(bytes_read)
bytes_read = reply.read(self.DISK_WRITE_BUFFER_SIZE)
app.processEvents()
if not self._verifyMd5Hash(temporary_backup_file.name,
self._backup.get("md5_hash", "")):
# Don't restore the backup if the MD5 hashes do not match.
# This can happen if the download was interrupted.
Logger.log(
"w",
"Remote and local MD5 hashes do not match, not restoring backup."
)
self.restore_backup_error_message = self.DEFAULT_ERROR_MESSAGE
# Tell Cura to place the backup back in the user data folder.
with open(temporary_backup_file.name, "rb") as read_backup:
cura_api = CuraApplication.getInstance().getCuraAPI()
cura_api.backups.restoreBackup(read_backup.read(),
self._backup.get("metadata", {}))
self._job_done.set()