def test_delete_fail(self):
# deletes should fail if being written to
blob_file = BlobFile(self.blob_dir, self.fake_content_hash,
self.fake_content_len)
writer, finished_d = blob_file.open_for_writing(peer=1)
yield self.assertFailure(blob_file.delete(), ValueError)
writer.write(self.fake_content)
writer.close()
# deletes should fail if being read and not closed
blob_file = BlobFile(self.blob_dir, self.fake_content_hash,
self.fake_content_len)
self.assertTrue(blob_file.verified)
f = blob_file.open_for_reading()
yield self.assertFailure(blob_file.delete(), ValueError)
def test_delete_fail(self):
# deletes should fail if being written to
blob_file = BlobFile(self.blob_dir, self.fake_content_hash, self.fake_content_len)
writer, finished_d = blob_file.open_for_writing(peer=1)
with self.assertRaises(ValueError):
blob_file.delete()
writer.write(self.fake_content)
writer.close()
# deletes should fail if being read and not closed
blob_file = BlobFile(self.blob_dir, self.fake_content_hash, self.fake_content_len)
self.assertTrue(blob_file.verified)
r = blob_file.open_for_reading() # must be set to variable otherwise it gets garbage collected
with self.assertRaises(ValueError):
blob_file.delete()
def test_delete(self):
blob_file = BlobFile(self.blob_dir, self.fake_content_hash, self.fake_content_len)
writer, finished_d = blob_file.open_for_writing(peer=1)
writer.write(self.fake_content)
out = yield finished_d
out = yield blob_file.delete()
blob_file = BlobFile(self.blob_dir, self.fake_content_hash)
self.assertFalse(blob_file.verified)
def _from_stream_descriptor_blob(cls, loop: asyncio.BaseEventLoop,
blob_dir: str,
blob: BlobFile) -> 'StreamDescriptor':
assert os.path.isfile(blob.file_path)
with open(blob.file_path, 'rb') as f:
json_bytes = f.read()
try:
decoded = json.loads(json_bytes.decode())
except json.JSONDecodeError:
blob.delete()
raise InvalidStreamDescriptorError("Does not decode as valid JSON")
if decoded['blobs'][-1]['length'] != 0:
raise InvalidStreamDescriptorError(
"Does not end with a zero-length blob.")
if any(
[blob_info['length'] == 0 for blob_info in decoded['blobs'][:-1]]):
raise InvalidStreamDescriptorError(
"Contains zero-length data blob")
if 'blob_hash' in decoded['blobs'][-1]:
raise InvalidStreamDescriptorError(
"Stream terminator blob should not have a hash")
if any([
i != blob_info['blob_num']
for i, blob_info in enumerate(decoded['blobs'])
]):
raise InvalidStreamDescriptorError(
"Stream contains out of order or skipped blobs")
descriptor = cls(
loop, blob_dir,
binascii.unhexlify(decoded['stream_name']).decode(),
decoded['key'],
binascii.unhexlify(decoded['suggested_file_name']).decode(), [
BlobInfo(info['blob_num'], info['length'], info['iv'],
info.get('blob_hash')) for info in decoded['blobs']
], decoded['stream_hash'], blob.blob_hash)
if descriptor.get_stream_hash() != decoded['stream_hash']:
raise InvalidStreamDescriptorError(
"Stream hash does not match stream metadata")
return descriptor