def setUp(self):
super(TestRetryInterface, self).setUp()
self.total_calls = 0
self.auth = Mock()
self.session = Session(include_builtin_handlers=False)
self.service = Mock()
self.service.endpoint_prefix = 'ec2'
self.service.session = self.session
self.endpoint = QueryEndpoint(
self.service, 'us-west-2', 'https://ec2.us-west-2.amazonaws.com/',
auth=self.auth)
self.http_session = Mock()
self.endpoint.http_session = self.http_session
self.get_response_patch = patch('botocore.response.get_response')
self.get_response = self.get_response_patch.start()
self.retried_on_exception = None
def setUp(self):
super(TestRetryInterface, self).setUp()
self.total_calls = 0
self.auth = Mock()
self.session = Session(include_builtin_handlers=False)
self.service = Mock()
self.service.endpoint_prefix = "ec2"
self.service.session = self.session
self.endpoint = QueryEndpoint(self.service, "us-west-2", "https://ec2.us-west-2.amazonaws.com/", auth=self.auth)
self.http_session = Mock()
self.endpoint.http_session = self.http_session
self.get_response_patch = patch("botocore.response.get_response")
self.get_response = self.get_response_patch.start()
self.retried_on_exception = None
class TestRetryInterface(BaseSessionTest):
def setUp(self):
super(TestRetryInterface, self).setUp()
self.total_calls = 0
self.auth = Mock()
self.session = Session(include_builtin_handlers=False)
self.service = Mock()
self.service.endpoint_prefix = 'ec2'
self.service.session = self.session
self.endpoint = QueryEndpoint(
self.service, 'us-west-2', 'https://ec2.us-west-2.amazonaws.com/',
auth=self.auth)
self.http_session = Mock()
self.endpoint.http_session = self.http_session
self.get_response_patch = patch('botocore.response.get_response')
self.get_response = self.get_response_patch.start()
self.retried_on_exception = None
def tearDown(self):
self.get_response_patch.stop()
def max_attempts_retry_handler(self, attempts, **kwargs):
# Simulate a max requests of 3.
self.total_calls += 1
if attempts == 3:
return None
else:
# Returning anything non-None will trigger a retry,
# but 0 here is so that time.sleep(0) happens.
return 0
def connection_error_handler(self, attempts, caught_exception, **kwargs):
self.total_calls += 1
if attempts == 3:
return None
elif isinstance(caught_exception, ConnectionError):
# Returning anything non-None will trigger a retry,
# but 0 here is so that time.sleep(0) happens.
return 0
else:
return None
def test_retry_events_are_emitted(self):
emitted_events = []
self.session.register('needs-retry.ec2.DescribeInstances',
lambda **kwargs: emitted_events.append(kwargs))
op = Mock()
op.name = 'DescribeInstances'
self.endpoint.make_request(op, {})
self.assertEqual(len(emitted_events), 1)
self.assertEqual(emitted_events[0]['event_name'],
'needs-retry.ec2.DescribeInstances')
def test_retry_events_can_alter_behavior(self):
self.session.register('needs-retry.ec2.DescribeInstances',
self.max_attempts_retry_handler)
op = Mock()
op.name = 'DescribeInstances'
self.endpoint.make_request(op, {})
self.assertEqual(self.total_calls, 3)
def test_retry_on_socket_errors(self):
self.session.register('needs-retry.ec2.DescribeInstances',
self.connection_error_handler)
op = Mock()
op.name = 'DescribeInstances'
self.http_session.send.side_effect = ConnectionError()
self.endpoint.make_request(op, {})
self.assertEqual(self.total_calls, 3)