def add_default_resource_props(resource_props, stack_name, resource_name=None):
""" Apply some fixes to resource props which otherwise cause deployments to fail """
res_type = resource_props['Type']
props = resource_props.get('Properties', {})
if res_type == 'AWS::Lambda::EventSourceMapping' and not props.get('StartingPosition'):
props['StartingPosition'] = 'LATEST'
if res_type == 'AWS::SNS::Topic' and not props.get('TopicName'):
props['TopicName'] = 'topic-%s' % short_uid()
if res_type == 'AWS::SQS::Queue' and not props.get('QueueName'):
props['QueueName'] = 'queue-%s' % short_uid()
if res_type == 'AWS::ApiGateway::RestApi':
props['Name'] = props.get('Name') or resource_name
if res_type == 'AWS::DynamoDB::Table':
update_dynamodb_index_resource(resource_props)
# generate default names for certain resource types
default_attrs = (('AWS::IAM::Role', 'RoleName'), ('AWS::Events::Rule', 'Name'))
for entry in default_attrs:
if res_type == entry[0] and not props.get(entry[1]):
props[entry[1]] = 'cf-%s-%s' % (stack_name, md5(canonical_json(props)))
def add_default_props(resource_props):
# apply some fixes which otherwise cause deployments to fail
res_type = resource_props['Type']
props = resource_props.get('Properties', {})
if res_type == 'AWS::Lambda::EventSourceMapping' and not props.get(
'StartingPosition'):
props['StartingPosition'] = 'LATEST'
if res_type == 'AWS::IAM::Role' and not props.get('RoleName'):
props['RoleName'] = 'cf-%s-%s' % (stack_name,
md5(canonical_json(props)))
def add_default_props(resource_props):
""" apply some fixes which otherwise cause deployments to fail """
res_type = resource_props['Type']
props = resource_props.get('Properties', {})
if res_type == 'AWS::Lambda::EventSourceMapping' and not props.get('StartingPosition'):
props['StartingPosition'] = 'LATEST'
# generate default names for certain resource types
default_attrs = (('AWS::IAM::Role', 'RoleName'), ('AWS::Events::Rule', 'Name'))
for entry in default_attrs:
if res_type == entry[0] and not props.get(entry[1]):
props[entry[1]] = 'cf-%s-%s' % (stack_name, md5(canonical_json(props)))
def get_physical_resource_id(self, attribute=None, **kwargs):
policy = self.props.get("Policy")
return policy and md5(canonical_json(json.loads(policy)))