def test_update_stack_calls_cloudformation_api_properly(self, _, cloudformation_mock):
stack = Mock(spec=CloudFormationStack)
stack.name = "stack-name"
stack.get_parameters_list.return_value = [('a', 'b')]
stack.parameters = {}
stack.template = Mock(spec=CloudFormationTemplate)
stack.template.name = "template-name"
stack.template.get_template_json.return_value = {'key': 'value'}
stack.timeout = 42
cfn = CloudFormation()
cfn.update_stack(stack)
cloudformation_mock.return_value.update_stack.assert_called_once_with('stack-name',
capabilities=['CAPABILITY_IAM'],
parameters=[('a', 'b')],
template_body={'key': 'value'})
class StackActionHandler(object):
def __init__(self, config):
self.logger = get_logger()
self.config = config
self.region = config.region
self.cfn = CloudFormation(region=self.region)
self.parameter_resolver = ParameterResolver(region=self.region)
def create_or_update_stacks(self):
existing_stacks = self.cfn.get_stack_names()
desired_stacks = self.config.stacks
stack_processing_order = DependencyResolver().get_stack_order(desired_stacks)
if len(stack_processing_order) > 1:
self.logger.info(
"Will process stacks in the following order: {0}".format(", ".join(stack_processing_order)))
for stack_name in stack_processing_order:
stack_config = self.config.stacks.get(stack_name)
template_url = stack_config.template_url
working_dir = stack_config.working_dir
template = CloudFormationTemplateLoader.get_template_from_url(template_url, working_dir)
template = CloudFormationTemplateTransformer.transform_template(template)
parameters = self.parameter_resolver.resolve_parameter_values(stack_config.parameters, stack_name)
stack = CloudFormationStack(template, parameters, stack_name, self.region, stack_config.timeout)
if stack_name in existing_stacks:
self.cfn.validate_stack_is_ready_for_updates(stack_name)
self.cfn.update_stack(stack)
else:
self.cfn.create_stack(stack)
CustomResourceHandler.process_post_resources(stack)