def cancel(self, reason=None):
if reason:
msg = "download stream cancelled: %s" % reason
else:
msg = "download stream cancelled"
if self.data_downloading_deferred and not self.data_downloading_deferred.called:
self.data_downloading_deferred.errback(DownloadCanceledError(msg))
def close(self, reason=None):
# if we've already called finished_cb because we either finished writing
# or closed already, do nothing
if self.finished_cb_d is not None:
return
if reason is None:
reason = Failure(DownloadCanceledError())
self.finished_cb_d = self.finished_cb(self, reason)
def _save_verified_blob(self, writer):
if self.saved_verified_blob is False:
writer.write_handle.seek(0)
out_path = os.path.join(self.blob_dir, self.blob_hash)
producer = FileBodyProducer(writer.write_handle)
yield producer.startProducing(open(out_path, 'wb'))
self.saved_verified_blob = True
defer.returnValue(True)
else:
raise DownloadCanceledError()
def stop(self):
for d in reversed(self.deferreds):
d.cancel()
while self.writers:
writer = self.writers.pop()
writer.close(DownloadCanceledError())
self.blob_hashes = []
if self.looping_call.running:
self.looping_call.stop()
if self.lc_deferred and not self.lc_deferred.called:
self.lc_deferred.cancel()
if not self.finished_deferred.called:
self.finished_deferred.cancel()