def test_exponential_retry(self, resource_group, location, storage_account,
storage_account_key):
# Arrange
container_name = self.get_resource_name('utcontainer')
retry = ExponentialRetry(initial_backoff=1,
increment_base=3,
retry_total=3)
service = self._create_storage_service(BlobServiceClient,
storage_account,
storage_account_key,
retry_policy=retry)
try:
container = 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):
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
service.delete_container(container_name)
async def test_retry_put_block_with_seekable_stream_async(self, storage_account_name, storage_account_key):
pytest.skip("Aiohttp closes stream after request - cannot rewind.")
# Arrange
bsc = BlobServiceClient(self.account_url(storage_account_name, "blob"), credential=storage_account_key,
retry_policy=self.retry, transport=AiohttpTestTransport())
await self._setup(bsc)
blob_name = self.get_resource_name('blob')
data = self.get_random_bytes(PUT_BLOCK_SIZE)
data_stream = BytesIO(data)
# rig the response so that it fails for a single time
responder = ResponseCallback(status=201, new_status=408)
# Act
blob = bsc.get_blob_client(self.container_name, blob_name)
await blob.stage_block(1, data_stream, raw_response_hook=responder.override_first_status)
# Assert
_, uncommitted_blocks = await blob.get_block_list(
block_list_type="uncommitted",
raw_response_hook=responder.override_first_status)
self.assertEqual(len(uncommitted_blocks), 1)
self.assertEqual(uncommitted_blocks[0].size, PUT_BLOCK_SIZE)
# Commit block and verify content
await blob.commit_block_list(['1'], raw_response_hook=responder.override_first_status)
# Assert
content = await (await blob.download_blob()).readall()
self.assertEqual(content, data)
def test_retry_callback_and_retry_context(self, resource_group, location,
storage_account,
storage_account_key):
# Arrange
container_name = self.get_resource_name('utcontainer')
retry = LinearRetry(backoff=1)
service = self._create_storage_service(BlobServiceClient,
storage_account,
storage_account_key,
retry_policy=retry)
# Force the create call to 'timeout' with a 408
callback = ResponseCallback(status=201, new_status=408).override_status
def assert_exception_is_present_on_retry_context(**kwargs):
self.assertIsNotNone(kwargs.get('response'))
self.assertEqual(kwargs['response'].status_code, 408)
# 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):
service.create_container(
container_name,
raw_response_hook=callback,
retry_hook=assert_exception_is_present_on_retry_context)
finally:
service.delete_container(container_name)
def test_retry_put_block_with_non_seekable_stream_fail(
self, resource_group, location, storage_account,
storage_account_key):
# Arrange
bsc = BlobServiceClient(self.account_url(storage_account, "blob"),
credential=storage_account_key,
retry_policy=self.retry)
self._setup(bsc)
blob_name = self.get_resource_name('blob')
data = self.get_random_bytes(PUT_BLOCK_SIZE)
data_stream = self.NonSeekableStream(BytesIO(data))
# rig the response so that it fails for a single time
responder = ResponseCallback(status=201, new_status=408)
# Act
blob = bsc.get_blob_client(self.container_name, blob_name)
with self.assertRaises(HttpResponseError) as error:
blob.stage_block(1,
data_stream,
length=PUT_BLOCK_SIZE,
raw_response_hook=responder.override_first_status)
# Assert
self.assertEqual(error.exception.response.status_code, 408)
def test_retry_put_block_with_seekable_stream(self, resource_group,
location, storage_account,
storage_account_key):
# Arrange
bsc = BlobServiceClient(self.account_url(storage_account, "blob"),
credential=storage_account_key,
retry_policy=self.retry)
self._setup(bsc)
blob_name = self.get_resource_name('blob')
data = self.get_random_bytes(PUT_BLOCK_SIZE)
data_stream = BytesIO(data)
# rig the response so that it fails for a single time
responder = ResponseCallback(status=201, new_status=408)
# Act
blob = bsc.get_blob_client(self.container_name, blob_name)
blob.stage_block(1,
data_stream,
raw_response_hook=responder.override_first_status)
# Assert
_, uncommitted_blocks = blob.get_block_list(
block_list_type="uncommitted",
raw_response_hook=responder.override_first_status)
self.assertEqual(len(uncommitted_blocks), 1)
self.assertEqual(uncommitted_blocks[0].size, PUT_BLOCK_SIZE)
# Commit block and verify content
blob.commit_block_list(
['1'], raw_response_hook=responder.override_first_status)
# Assert
content = blob.download_blob().readall()
self.assertEqual(content, data)
async def test_retry_with_deserialization_async(self, storage_account_name,
storage_account_key):
# Arrange
container_name = self.get_resource_name('retry')
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient,
storage_account_name,
storage_account_key,
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)
def test_retry_on_timeout(self, tables_storage_account_name,
tables_primary_storage_account_key):
self._set_up(tables_storage_account_name,
tables_primary_storage_account_key,
default_table=False,
retry_mode=RetryMode.Exponential,
retry_backoff_factor=1)
callback = ResponseCallback(status=200,
new_status=408).override_first_status
try:
# The initial get will return 200, but we overwrite it with 408 and retry.
# The retry will then succeed.
self.ts.get_service_properties(raw_response_hook=callback)
finally:
self._tear_down()
def test_retry_on_server_error(self, storage_account_name, storage_account_key):
# Arrange
container_name = self.get_resource_name('utcontainer')
service = self._create_storage_service(BlobServiceClient, storage_account_name, storage_account_key)
# Force the create call to 'timeout' with a 408
callback = ResponseCallback(status=201, new_status=500).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):
service.create_container(container_name, raw_response_hook=callback)
finally:
service.delete_container(container_name)
def test_retry_on_timeout(self, storage_account_name, storage_account_key):
# Arrange
container_name = self.get_resource_name('utcontainer')
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient, storage_account_name, storage_account_key, retry_policy=retry)
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):
service.create_container(container_name, raw_response_hook=callback)
finally:
service.delete_container(container_name)
def test_retry_on_server_error(self, tables_storage_account_name,
tables_primary_storage_account_key):
self._set_up(tables_storage_account_name,
tables_primary_storage_account_key,
default_table=False)
try:
callback = ResponseCallback(status=201,
new_status=500).override_status
new_table_name = self.get_resource_name('uttable')
# The initial create will return 201, but we overwrite it with 500 and retry.
# The retry will then get a 409 conflict.
with pytest.raises(ResourceExistsError):
self.ts.create_table(new_table_name,
raw_response_hook=callback)
finally:
self.ts.delete_table(new_table_name)
self._tear_down()
def test_invalid_retry(self, storage_account_name, storage_account_key):
# Arrange
container_name = self.get_resource_name('utcontainer')
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient, storage_account_name, storage_account_key, retry_policy=retry)
# 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:
service.create_container(container_name, raw_response_hook=callback)
self.assertEqual(error.exception.response.status_code, 418)
self.assertEqual(error.exception.reason, 'Created')
finally:
service.delete_container(container_name)
def test_retry_with_deserialization(self, storage_account_name, storage_account_key):
# Arrange
container_name = self.get_resource_name('retry')
retry = ExponentialRetry(initial_backoff=1, increment_base=2)
service = self._create_storage_service(
BlobServiceClient, storage_account_name, storage_account_key, retry_policy=retry)
try:
created = 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
containers = list(containers)
self.assertTrue(len(containers) >= 1)
finally:
service.delete_container(container_name)
def test_no_retry(self, storage_account_name, storage_account_key):
# Arrange
container_name = self.get_resource_name('utcontainer')
service = self._create_storage_service(
BlobServiceClient, storage_account_name, storage_account_key, retry_total=0)
# Force the create call to 'timeout' with a 408
callback = ResponseCallback(status=201, new_status=408).override_status
# Act
try:
with self.assertRaises(HttpResponseError) as error:
service.create_container(container_name, raw_response_hook=callback)
self.assertEqual(error.exception.response.status_code, 408)
self.assertEqual(error.exception.reason, 'Created')
finally:
service.delete_container(container_name)
async def test_no_retry_async(self, tables_storage_account_name,
tables_primary_storage_account_key):
await self._set_up(tables_storage_account_name,
tables_primary_storage_account_key,
retry_total=0,
default_table=False)
new_table_name = self.get_resource_name('uttable')
# Force the create call to error with a 500
callback = ResponseCallback(status=201, new_status=500).override_status
try:
with pytest.raises(HttpResponseError) as error:
await self.ts.create_table(new_table_name,
raw_response_hook=callback)
assert error.value.response.status_code == 500
assert error.value.reason == 'Created'
finally:
await self.ts.delete_table(new_table_name)
await self._tear_down()
async def test_linear_retry_async(self, storage_account_name,
storage_account_key):
# Arrange
container_name = self.get_resource_name('utcontainer')
retry = LinearRetry(backoff=1)
service = self._create_storage_service(
BlobServiceClient,
storage_account_name,
storage_account_key,
retry_policy=retry,
transport=AiohttpTestTransport())
# Force the create call to 'timeout' with a 408
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)
