async def _test_invalid_account_key_async(self):
# Arrange
container_name = self.get_resource_name()
retry = ExponentialRetry(initial_backoff=1,
increment_base=3,
retry_total=3)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
service.credential.account_name = "dummy_account_name"
service.credential.account_key = "dummy_account_key"
# Shorten retries and add counter
retry_counter = RetryCounter()
retry_callback = retry_counter.simple_count
# Act
with self.assertRaises(ClientAuthenticationError):
await service.create_container(container_name,
retry_callback=retry_callback)
# Assert
# No retry should be performed since the signing error is fatal
self.assertEqual(retry_counter.count, 0)
async def _test_retry_to_secondary_with_get_async(self):
# Arrange
container_name = self.get_resource_name()
retry = ExponentialRetry(retry_to_secondary=True,
initial_backoff=1,
increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
# Act
try:
container = await service.create_container(container_name)
response_callback = ResponseCallback(
status=200, new_status=408).override_first_status
# Assert
# Confirm that the get request gets retried to secondary
def retry_callback(retry_count=None, location_mode=None, **kwargs):
# Only check this every other time, sometimes the secondary location fails due to delay
if retry_count % 2 == 0:
self.assertEqual(LocationMode.SECONDARY, location_mode)
await container.get_container_properties(
raw_response_hook=response_callback, retry_hook=retry_callback)
finally:
await service.delete_container(container_name)
async def _test_secondary_location_mode_async(self):
# Arrange
container_name = self.get_resource_name()
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
# Act
try:
container = await service.create_container(container_name)
container.location_mode = LocationMode.SECONDARY
# Override the response from secondary if it's 404 as that simply means
# the container hasn't replicated. We're just testing we try secondary,
# so that's fine.
response_callback = ResponseCallback(
status=404, new_status=200).override_first_status
# Assert
def request_callback(request):
self.assertNotEqual(
-1, request.http_request.url.find('-secondary'))
request_callback = request_callback
await container.get_container_properties(
raw_request_hook=request_callback,
raw_response_hook=response_callback)
finally:
# Delete will go to primary, so disable the request validation
await service.delete_container(container_name)
async def _test_retry_to_secondary_with_put_async(self):
# Arrange
container_name = self.get_resource_name()
retry = ExponentialRetry(retry_to_secondary=True,
initial_backoff=1,
increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
# Act
try:
# Fail the first create attempt
response_callback = ResponseCallback(
status=201, new_status=408).override_first_status
# Assert
# Confirm that the create request does *not* get retried to secondary
# This should actually throw InvalidPermissions if sent to secondary,
# but validate the location_mode anyways.
def retry_callback(location_mode=None, **kwargs):
self.assertEqual(LocationMode.PRIMARY, location_mode)
with self.assertRaises(ResourceExistsError):
await service.create_container(
container_name,
raw_response_hook=response_callback,
retry_hook=retry_callback)
finally:
await service.delete_container(container_name)
async def _test_retry_with_deserialization_async(self):
# Arrange
container_name = self.get_resource_name(prefix='retry')
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
try:
created = await service.create_container(container_name)
# Act
callback = ResponseCallback(status=200,
new_status=408).override_first_status
containers = service.list_containers(name_starts_with='retry',
raw_response_hook=callback)
# Assert
listed = []
async for c in containers:
listed.append(c)
self.assertTrue(len(listed) >= 1)
finally:
await service.delete_container(container_name)
async def _test_exponential_retry_async(self):
# Arrange
container_name = self.get_resource_name()
retry = ExponentialRetry(initial_backoff=1,
increment_base=3,
retry_total=3)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
try:
container = await service.create_container(container_name)
# Force the create call to 'timeout' with a 408
callback = ResponseCallback(status=200, new_status=408)
# Act
with self.assertRaises(HttpResponseError):
await container.get_container_properties(
raw_response_hook=callback.override_status)
# Assert the response was called the right number of times (1 initial request + 3 retries)
self.assertEqual(callback.count, 1 + 3)
finally:
# Clean up
await service.delete_container(container_name)
def test_exponential_retry_interval_async(self):
# Arrange
retry_policy = ExponentialRetry(initial_backoff=1,
increment_base=3,
random_jitter_range=3)
context_stub = {}
for i in range(10):
# Act
context_stub['count'] = 0
backoff = retry_policy.get_backoff_time(context_stub)
# Assert backoff interval is within +/- 3 of 1
self.assertTrue(0 <= backoff <= 4)
# Act
context_stub['count'] = 1
backoff = retry_policy.get_backoff_time(context_stub)
# Assert backoff interval is within +/- 3 of 4(1+3^1)
self.assertTrue(1 <= backoff <= 7)
# Act
context_stub['count'] = 2
backoff = retry_policy.get_backoff_time(context_stub)
# Assert backoff interval is within +/- 3 of 10(1+3^2)
self.assertTrue(7 <= backoff <= 13)
# Act
context_stub['count'] = 3
backoff = retry_policy.get_backoff_time(context_stub)
# Assert backoff interval is within +/- 3 of 28(1+3^3)
self.assertTrue(25 <= backoff <= 31)
def setUp(self):
super(StorageBlobRetryTestAsync, self).setUp()
url = self._get_account_url()
credential = self._get_shared_key_credential()
retry = ExponentialRetry(initial_backoff=1,
increment_base=2,
retry_total=3)
self.bs = BlobServiceClient(url,
credential=credential,
retry_policy=retry)
self.container_name = self.get_resource_name('utcontainer')
async def _test_retry_on_timeout_async(self):
# Arrange
container_name = self.get_resource_name()
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
callback = ResponseCallback(status=201, new_status=408).override_status
# Act
try:
# The initial create will return 201, but we overwrite it and retry.
# The retry will then get a 409 and return false.
with self.assertRaises(ResourceExistsError):
await service.create_container(container_name,
raw_response_hook=callback)
finally:
await service.delete_container(container_name)
async def _test_location_lock_async(self):
# Arrange
retry = ExponentialRetry(retry_to_secondary=True,
initial_backoff=1,
increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
# Act
# Fail the first request and set the retry policy to retry to secondary
response_callback = ResponseCallback(
status=200, new_status=408).override_first_status
#context = _OperationContext(location_lock=True)
# Assert
# Confirm that the first request gets retried to secondary
# The given test account must be GRS
def retry_callback(retry_count=None, location_mode=None, **kwargs):
self.assertEqual(LocationMode.SECONDARY, location_mode)
# Confirm that the second list request done with the same context sticks
# to the final location of the first list request (aka secondary) despite
# the client normally trying primary first
requests = []
def request_callback(request):
if not requests:
requests.append(request)
else:
self.assertNotEqual(
-1, request.http_request.url.find('-secondary'))
containers = service.list_containers(results_per_page=1,
retry_hook=retry_callback)
await containers.__anext__()
await containers.__anext__()
async def _test_invalid_retry_async(self):
# Arrange
container_name = self.get_resource_name()
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
self.settings,
retry_policy=retry,
transport=AiohttpTestTransport())
# Force the create call to fail by pretending it's a teapot
callback = ResponseCallback(status=201, new_status=418).override_status
# Act
try:
with self.assertRaises(HttpResponseError) as error:
await service.create_container(container_name,
raw_response_hook=callback)
self.assertEqual(error.exception.response.status_code, 418)
self.assertEqual(error.exception.reason, 'Created')
finally:
await service.delete_container(container_name)