def write_ec_meta_chunk(self, source, size, storage_method, sysmeta,
meta_chunk):
meta_checksum = md5()
handler = EcMetachunkWriter(sysmeta, meta_chunk, meta_checksum,
storage_method)
bytes_transferred, checksum, chunks = handler.stream(source, size)
return Response("OK")
def test_write_connect_errors(self):
test_cases = [
{
'error': green.ConnectionTimeout(1.0),
'msg': 'connect: Connection timeout 1.0 second'
},
{
'error': Exception('failure'),
'msg': 'connect: failure'
},
]
for test in test_cases:
checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + \
self.storage_method.ec_nb_parity
resps = [201] * (nb - 1)
# Put the error in the middle to mess with chunk indices
err_pos = random.randint(0, nb)
resps.insert(err_pos, test['error'])
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta,
self.meta_chunk_copy(), checksum,
self.storage_method)
bytes_transferred, checksum, chunks = handler.stream(
source, size)
self.assertEqual(len(chunks), nb)
for i in range(nb - 1):
self.assertEqual(chunks[i].get('error'), None)
self.assertEqual(chunks[nb - 1].get('error'), test['msg'])
self.assertEqual(bytes_transferred, 0)
self.assertEqual(checksum, EMPTY_MD5)
def test_write_response_error(self):
test_cases = [
{
'error': green.ChunkWriteTimeout(1.0),
'msg': 'resp: Chunk write timeout 1.0 second'
},
{
'error': Exception('failure'),
'msg': 'resp: failure'
},
]
for test in test_cases:
checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + \
self.storage_method.ec_nb_parity
resps = [201] * (nb - 1)
resps.append((100, test['error']))
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta,
self.meta_chunk_copy(), checksum,
self.storage_method)
bytes_transferred, checksum, chunks = handler.stream(
source, size)
self.assertEqual(len(chunks), nb)
for i in range(nb - 1):
self.assertEqual(chunks[i].get('error'), None)
self.assertEqual(chunks[nb - 1].get('error'), test['msg'])
self.assertEqual(bytes_transferred, 0)
self.assertEqual(checksum, EMPTY_MD5)
def test_write_transfer(self):
checksum = self.checksum()
segment_size = self.storage_method.ec_segment_size
test_data = (b'1234' * segment_size)[:-10]
size = len(test_data)
test_data_checksum = self.checksum(test_data).hexdigest()
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
resps = [201] * nb
source = BytesIO(test_data)
put_reqs = defaultdict(lambda: {'parts': []})
def cb_body(conn_id, part):
put_reqs[conn_id]['parts'].append(part)
# TODO test headers
with set_http_connect(*resps, cb_body=cb_body):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
bytes_transferred, checksum, chunks = handler.stream(source, size)
self.assertEqual(len(test_data), bytes_transferred)
self.assertEqual(checksum, self.checksum(test_data).hexdigest())
fragments = []
for conn_id, info in put_reqs.items():
body, trailers = decode_chunked_body(b''.join(info['parts']))
fragments.append(body)
metachunk_size = int(trailers[CHUNK_HEADERS['metachunk_size']])
metachunk_hash = trailers[CHUNK_HEADERS['metachunk_hash']]
self.assertEqual(metachunk_size, size)
self.assertEqual(metachunk_hash, test_data_checksum)
self.assertEqual(len(fragments), nb)
fragment_size = self.storage_method.ec_fragment_size
# retrieve segments
frags = []
for frag in fragments:
data = [
frag[x:x + fragment_size]
for x in range(0, len(frag), fragment_size)
]
frags.append(data)
fragments = zip(*frags)
final_data = b''
for frag in fragments:
self.assertEqual(len(frag), nb)
frag = list(frag)
final_data += self.storage_method.driver.decode(frag)
self.assertEqual(len(test_data), len(final_data))
self.assertEqual(test_data_checksum,
self.checksum(final_data).hexdigest())
def test_write_simple(self):
checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
resps = [201] * nb
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
bytes_transferred, checksum, chunks = handler.stream(source, size)
self.assertEqual(len(chunks), nb)
self.assertEqual(bytes_transferred, 0)
self.assertEqual(checksum, EMPTY_MD5)
def _test_write_checksum_algo(self, expected_checksum, **kwargs):
global_checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
resps = [201] * nb
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
global_checksum, self.storage_method,
**kwargs)
bytes_transferred, checksum, chunks = handler.stream(source, size)
self.assertEqual(nb, len(chunks))
self.assertEqual(0, bytes_transferred)
self.assertEqual(expected_checksum, checksum)
def test_write_exception(self):
checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
resps = [500] * nb
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
self.assertRaises(exc.OioException, handler.stream, source, size)
def test_write_quorum_success(self):
checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
quorum_size = self.storage_method.quorum
resps = [201] * quorum_size
resps += [500] * (nb - quorum_size)
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
bytes_transferred, checksum, chunks = handler.stream(source, size)
self.assertEqual(len(chunks), nb)
for i in range(quorum_size):
self.assertEqual(chunks[i].get('error'), None)
for i in range(quorum_size, nb):
self.assertEqual(chunks[i].get('error'), 'resp: HTTP 500')
self.assertEqual(bytes_transferred, 0)
self.assertEqual(checksum, EMPTY_MD5)
def test_write_quorum_error(self):
checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
quorum_size = self.storage_method.quorum
resps = [500] * quorum_size
resps += [201] * (nb - quorum_size)
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
self.assertRaises(exc.ServiceBusy, handler.stream, source, size)
def test_write_exception(self):
checksum = self.checksum()
source = empty_stream()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
resps = [500] * nb
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
# From now on, exceptions happening during chunk upload are
# considered retryable, and thus will tell the caller the
# service was just too busy.
self.assertRaises(exc.ServiceBusy, handler.stream, source, size)
def test_write_timeout_source(self):
class TestReader(object):
def read(self, size):
raise Timeout(1.0)
checksum = self.checksum()
source = TestReader()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
resps = [201] * nb
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
self.assertRaises(exc.OioTimeout, handler.stream, source, size)
def test_write_exception_source(self):
class TestReader(object):
def read(self, size):
raise Exception('failure')
checksum = self.checksum()
source = TestReader()
size = CHUNK_SIZE * self.storage_method.ec_nb_data
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
resps = [201] * nb
with set_http_connect(*resps):
handler = EcMetachunkWriter(self.sysmeta, self.meta_chunk(),
checksum, self.storage_method)
# TODO specialize exception
self.assertRaises(Exception, handler.stream, source, size)