def test_rebuild_failure(self):
meta_chunk = self.meta_chunk()
missing_chunk = meta_chunk.pop(1)
nb = self.storage_method.ec_nb_data +\
self.storage_method.ec_nb_parity
# add errors on other chunks
errors = [Timeout(), 404, Exception('failure')]
responses = [FakeResponse(random.choice(errors), '', {}) for i in
range(nb - 1)]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
missing = missing_chunk['num']
nb = self.storage_method.ec_nb_data +\
self.storage_method.ec_nb_parity
with set_http_requests(get_response) as conn_record:
handler = ECRebuildHandler(
meta_chunk, missing, self.storage_method)
# TODO use specialized exception
self.assertRaises(exc.OioException, handler.rebuild)
self.assertEqual(len(conn_record), nb - 1)
def test_read_range_unsatisfiable(self):
responses = [
FakeResponse(416),
FakeResponse(416),
FakeResponse(416),
FakeResponse(416),
FakeResponse(416),
FakeResponse(416),
FakeResponse(416),
FakeResponse(416),
]
# unsatisfiable range responses
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
headers = {}
meta_start = None
meta_end = 10000000000
meta_chunk = self.meta_chunk()
meta_chunk[0]['size'] = 1024
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
with set_http_requests(get_response) as conn_record:
handler = ECChunkDownloadHandler(self.storage_method, meta_chunk,
meta_start, meta_end, headers)
# TODO specialize Exception here (UnsatisfiableRange)
self.assertRaises(exc.OioException, handler.get_stream)
self.assertEqual(len(conn_record), nb)
def test_read_timeout_resume(self):
test_data = ('1234' * 1024*1024)[:-10]
data_checksum = self.checksum(test_data).hexdigest()
meta_chunk = self.meta_chunk()
headers = {}
responses = [
FakeResponse(200, test_data, headers, slow=0.05),
FakeResponse(200, test_data, headers),
FakeResponse(200, test_data, headers),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
headers = {}
data = ''
parts = []
with set_http_requests(get_response) as conn_record:
reader = io.ChunkReader(iter(meta_chunk), None, headers,
read_timeout=0.01)
it = reader.get_iter()
for part in it:
parts.append(part)
for d in part['iter']:
data += d
self.assertEqual(len(parts), 1)
self.assertEqual(data_checksum, self.checksum(data).hexdigest())
self.assertEqual(len(conn_record), 2)
def test_read_zero_byte(self):
test_data = ''
data_checksum = self.checksum(test_data).hexdigest()
meta_chunk = self.meta_chunk()
responses = [
FakeResponse(200, test_data),
FakeResponse(200, test_data),
FakeResponse(200, test_data),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
headers = {}
data = ''
parts = []
with set_http_requests(get_response) as conn_record:
reader = io.ChunkReader(iter(meta_chunk), None, headers)
it = reader.get_iter()
for part in it:
parts.append(part)
for d in part['iter']:
data += d
self.assertEqual(len(parts), 1)
self.assertEqual(len(test_data), len(data))
self.assertEqual(data_checksum, self.checksum(data).hexdigest())
self.assertEqual(len(conn_record), 1)
def test_read_range(self):
fragment_size = self.storage_method.ec_fragment_size
test_data, ec_chunks = self._make_ec_meta_resp()
part_size = len(ec_chunks[0])
headers = {
'Content-Length': fragment_size,
'Content-Type': 'text/plain',
'Content-Range': 'bytes 0-%s/%s' % (fragment_size - 1, part_size)}
responses = [
FakeResponse(206, ec_chunks[0][:fragment_size], headers),
FakeResponse(206, ec_chunks[1][:fragment_size], headers),
FakeResponse(206, ec_chunks[2][:fragment_size], headers),
FakeResponse(206, ec_chunks[3][:fragment_size], headers),
FakeResponse(206, ec_chunks[4][:fragment_size], headers),
FakeResponse(206, ec_chunks[5][:fragment_size], headers),
FakeResponse(206, ec_chunks[6][:fragment_size], headers),
FakeResponse(206, ec_chunks[7][:fragment_size], headers),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
headers = {}
meta_start = 1
meta_end = 4
meta_chunk = self.meta_chunk()
meta_chunk[0]['size'] = len(test_data)
data = ''
parts = []
with set_http_requests(get_response) as conn_record:
handler = ECChunkDownloadHandler(
self.storage_method, meta_chunk, meta_start, meta_end, headers)
stream = handler.get_stream()
for part in stream:
parts.append(part)
for x in part['iter']:
data += x
self.assertEqual(len(parts), 1)
self.assertEqual(parts[0]['start'], 1)
self.assertEqual(parts[0]['end'], 4)
self.assertEqual(data, '2341')
self.assertEqual(len(conn_record), self.storage_method.ec_nb_data)
def test_read_range_unsatisfiable(self):
responses = [
FakeResponse(416),
FakeResponse(416),
FakeResponse(416),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
meta_end = 1000000000
meta_chunk = self.meta_chunk()
headers = {'Range': 'bytes=-%s' % (meta_end)}
with set_http_requests(get_response) as conn_record:
reader = io.ChunkReader(iter(meta_chunk), None, headers)
self.assertEqual(None, reader.get_iter())
self.assertEqual(len(conn_record), self.storage_method.nb_copy)
def test_read_advanced(self):
segment_size = self.storage_method.ec_segment_size
test_data = ('1234' * segment_size)[:-657]
ec_chunks = self._make_ec_chunks(test_data)
chunks = [
{'path': '/0'},
{'path': '/1'},
{'path': '/2'},
{'path': '/3'},
{'path': '/4'},
{'path': '/5'},
{'path': '/6'},
{'path': '/7'},
]
responses = {
n['path']: FakeResponse(200, ec_chunks[i])
for i, n in enumerate(chunks)
}
def get_response(req):
return responses.pop(req['path'])
headers = {}
meta_start = None
meta_end = None
meta_chunk = self.meta_chunk()
meta_chunk[0]['size'] = len(test_data)
with set_http_requests(get_response) as conn_record:
handler = ECChunkDownloadHandler(self.storage_method,
meta_chunk, meta_start,
meta_end, headers)
stream = handler.get_stream()
for part in stream:
for x in part['iter']:
pass
# nb_data requests
self.assertEqual(len(conn_record), self.storage_method.ec_nb_data)
# nb_parity remaining
self.assertEqual(len(responses), self.storage_method.ec_nb_parity)
def test_read_zero_byte(self):
empty = ''
headers = {
'Content-Length': 0,
}
responses = [
FakeResponse(200, '', headers),
FakeResponse(200, '', headers),
FakeResponse(200, '', headers),
FakeResponse(200, '', headers),
FakeResponse(200, '', headers),
FakeResponse(200, '', headers),
FakeResponse(200, '', headers),
FakeResponse(200, '', headers),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
headers = {}
meta_start = 1
meta_end = 4
meta_chunk = self.meta_chunk()
meta_chunk[0]['size'] = len(empty)
data = ''
parts = []
with set_http_requests(get_response) as conn_record:
handler = ECChunkDownloadHandler(
self.storage_method, meta_chunk, meta_start, meta_end, headers)
stream = handler.get_stream()
for part in stream:
parts.append(part)
for x in part['iter']:
data += x
self.assertEqual(len(parts), 0)
self.assertEqual(data, empty)
self.assertEqual(len(conn_record), self.storage_method.ec_nb_data)
def test_read_range(self):
test_data = ('1024' * 1024)[:-10]
meta_chunk = self.meta_chunk()
meta_start = 1
meta_end = 4
part_data = test_data[meta_start:meta_end+1]
headers = {
'Content-Length': str(len(part_data)),
'Content-Type': 'text/plain',
'Content-Range': 'bytes %s-%s/%s' %
(meta_start, meta_end, len(test_data))
}
responses = [
FakeResponse(206, part_data, headers),
FakeResponse(206, part_data, headers),
FakeResponse(206, part_data, headers),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
headers = {'Range': 'bytes=%s-%s' % (meta_start, meta_end)}
data = ''
parts = []
with set_http_requests(get_response) as conn_record:
reader = io.ChunkReader(iter(meta_chunk), None, headers)
it = reader.get_iter()
for part in it:
parts.append(part)
for d in part['iter']:
data += d
self.assertEqual(len(parts), 1)
self.assertEqual(parts[0]['start'], 1)
self.assertEqual(parts[0]['end'], 4)
self.assertEqual(len(part_data), len(data))
self.assertEqual(len(conn_record), 1)
def test_rebuild_parity_errors(self):
test_data = ('1234' * self.storage_method.ec_segment_size)[:-777]
ec_chunks = self._make_ec_chunks(test_data)
# break one parity chunk
missing_chunk_body = ec_chunks.pop(-1)
meta_chunk = self.meta_chunk()
missing_chunk = meta_chunk.pop(-1)
# add also error on another chunk
for error in (Timeout(), 404, Exception('failure')):
headers = {}
base_responses = list()
for ec_chunk in ec_chunks:
base_responses.append(FakeResponse(200, ec_chunk, headers))
responses = base_responses
error_idx = random.randint(0, len(responses) - 1)
responses[error_idx] = FakeResponse(error, '', {})
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
missing = missing_chunk['num']
nb = self.storage_method.ec_nb_data +\
self.storage_method.ec_nb_parity
with set_http_requests(get_response) as conn_record:
handler = ECRebuildHandler(
meta_chunk, missing, self.storage_method)
stream = handler.rebuild()
result = ''.join(stream)
self.assertEqual(len(result), len(missing_chunk_body))
self.assertEqual(self.checksum(result).hexdigest(),
self.checksum(missing_chunk_body).hexdigest())
self.assertEqual(len(conn_record), nb - 1)
def test_read_timeout(self):
segment_size = self.storage_method.ec_segment_size
test_data = ('1234' * segment_size)[:-333]
ec_chunks = self._make_ec_chunks(test_data)
headers = {}
responses = [
FakeResponse(200, ec_chunks[0], headers, slow=0.1),
FakeResponse(200, ec_chunks[1], headers, slow=0.1),
FakeResponse(200, ec_chunks[2], headers, slow=0.1),
FakeResponse(200, ec_chunks[3], headers, slow=0.1),
FakeResponse(200, ec_chunks[4], headers, slow=0.1),
FakeResponse(200, ec_chunks[5], headers, slow=0.1),
FakeResponse(200, ec_chunks[6], headers, slow=0.1),
FakeResponse(200, ec_chunks[7], headers, slow=0.1),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
meta_chunk = self.meta_chunk()
meta_chunk[0]['size'] = len(test_data)
meta_start = None
meta_end = None
with set_http_requests(get_response) as conn_record:
handler = ECChunkDownloadHandler(
self.storage_method, meta_chunk, meta_start, meta_end, headers,
read_timeout=0.05)
stream = handler.get_stream()
body = ''
for part in stream:
for body_chunk in part['iter']:
body += body_chunk
self.assertNotEqual(self.checksum(test_data).hexdigest(),
self.checksum(body).hexdigest())
self.assertEqual(len(conn_record), nb)
def test_rebuild(self):
test_data = ('1234' * self.storage_method.ec_segment_size)[:-777]
ec_chunks = self._make_ec_chunks(test_data)
missing_chunk_body = ec_chunks.pop(1)
meta_chunk = self.meta_chunk()
missing_chunk = meta_chunk.pop(1)
headers = {}
responses = [
FakeResponse(200, ec_chunks[0], headers),
FakeResponse(200, ec_chunks[1], headers),
FakeResponse(200, ec_chunks[2], headers),
FakeResponse(200, ec_chunks[3], headers),
FakeResponse(200, ec_chunks[4], headers),
FakeResponse(200, ec_chunks[5], headers),
FakeResponse(200, ec_chunks[6], headers),
]
def get_response(req):
return responses.pop(0) if responses else FakeResponse(404)
missing = missing_chunk['num']
nb = self.storage_method.ec_nb_data + self.storage_method.ec_nb_parity
with set_http_requests(get_response) as conn_record:
handler = ECRebuildHandler(
meta_chunk, missing, self.storage_method)
stream = handler.rebuild()
result = ''.join(stream)
self.assertEqual(len(result), len(missing_chunk_body))
self.assertEqual(self.checksum(result).hexdigest(),
self.checksum(missing_chunk_body).hexdigest())
self.assertEqual(len(conn_record), nb - 1)
