def test_to_json(self):
app_state = AppState()
new_conf = DownloadConfiguration(number_of_images=9309,
images_per_category=83,
download_destination='481516')
last_result = Result(failed_urls=['1', 'one'], succeeded_urls=['x'])
progress_info = ProgressInfo(total_downloaded=192,
total_failed=38,
finished=False,
last_result=last_result)
position = Position(3, 1)
counts = {'wnid1': 29, 'wnid10': 3}
internal = InternalState(iterator_position=position,
category_counts=counts,
file_index=322)
app_state.set_configuration(new_conf)
app_state.set_progress_info(progress_info)
app_state.set_internal_state(internal)
app_state.add_error('Some error')
state_data = json.loads(app_state.to_json())
self.assertEqual(state_data['downloadPath'], '481516')
self.assertEqual(state_data['numberOfImages'], 9309)
self.assertEqual(state_data['imagesPerCategory'], 83)
self.assertNotEqual(state_data['timeLeft'], '')
self.assertEqual(state_data['imagesLoaded'], 192)
self.assertEqual(state_data['failures'], 38)
self.assertEqual(state_data['failedUrls'], ['1', 'one'])
self.assertEqual(state_data['succeededUrls'], ['x'])
self.assertEqual(state_data['errors'], ['Some error'])
self.assertAlmostEqual(state_data['progress'], 192.0 / 9309)
class StateManager(QtCore.QObject):
stateChanged = QtCore.pyqtSignal()
exceptionRaised = QtCore.pyqtSignal(str, arguments=['message'])
def __init__(self):
super().__init__()
self._app_state = AppState()
self._log_path = config.log_path
if self._app_state.progress_info.finished:
self._state = 'finished'
elif self._app_state.inprogress:
self._state = 'paused'
else:
self._state = 'initial'
self._reset_log()
self._strategy = self.get_strategy()
self._connect_signals()
def _connect_signals(self):
def handle_loaded(urls):
self.stateChanged.emit()
def handle_failed(urls):
self._log_failures(self._log_path, urls)
self.stateChanged.emit()
def handle_paused():
self._state = 'paused'
self.stateChanged.emit()
def handle_allDownloaded():
self._state = 'finished'
self._app_state.mark_finished()
self._app_state.save()
self.stateChanged.emit()
def handle_exception(message):
self._state = 'error'
self.exceptionRaised.emit(message)
self._strategy.imagesLoaded.connect(handle_loaded)
self._strategy.downloadFailed.connect(handle_failed)
self._strategy.downloadPaused.connect(handle_paused)
self._strategy.allDownloaded.connect(handle_allDownloaded)
self._strategy.exceptionRaised.connect(handle_exception)
def _reset_log(self):
if not os.path.exists(config.app_data_folder):
os.mkdir(config.app_data_folder)
if os.path.isfile(self._log_path):
os.remove(self._log_path)
with open(self._log_path, 'w') as f:
f.write('')
def _log_failures(self, log_path, urls):
with open(log_path, 'a') as f:
lines = '\n'.join(urls)
f.write(lines)
def get_strategy(self):
return DummyStrategy()
@QtCore.pyqtSlot()
def start_download(self):
if self._state == 'ready':
self._state = 'running'
self.stateChanged.emit()
self._strategy.start()
@QtCore.pyqtSlot(str, int, int)
def configure(self, destination, number_of_images,
images_per_category):
if self._state not in ['initial', 'ready']:
return
self._app_state.reset()
conf = DownloadConfiguration(number_of_images=number_of_images,
images_per_category=images_per_category,
download_destination=destination,
batch_size=config.default_batch_size)
if conf.is_valid:
self._state = 'ready'
path = self._parse_url(destination)
conf.download_destination = path
self._app_state.set_configuration(conf)
else:
self._state = 'initial'
self._generate_error_messages(conf)
self.stateChanged.emit()
def _generate_error_messages(self, download_conf):
for e in download_conf.errors:
self._app_state.add_error(e)
def _parse_url(self, file_uri):
p = urlparse(file_uri)
return os.path.abspath(os.path.join(p.netloc, p.path))
@QtCore.pyqtSlot()
def pause(self):
if self._state == 'running':
self._state = 'pausing'
self.stateChanged.emit()
self._strategy.pause_download()
@QtCore.pyqtSlot()
def resume(self):
if self._state == 'paused':
self._state = 'running'
self._strategy.resume_download()
self.stateChanged.emit()
@QtCore.pyqtSlot()
def reset(self):
if self._state not in ['running', 'pausing']:
self._state = 'initial'
self._reset_log()
self._app_state.reset()
self._strategy.quit()
self._strategy = self.get_strategy()
self._connect_signals()
self._app_state.save()
self.stateChanged.emit()
@QtCore.pyqtProperty(str)
def download_state(self):
return self._state
@QtCore.pyqtProperty(str)
def state_data_json(self):
return self._app_state.to_json()
@QtCore.pyqtProperty(str)
def time_remaining(self):
return self._app_state.time_remaining