def delete_stack(self, name, region):
"""Destroy a created cfn stack."""
try:
set_credentials(region, self.__credentials)
id = self.__get_stack_internal_id(name, region)
if id in self.__created_stacks:
logging.info("Destroying stack {0} in region {1}".format(
name, region))
try:
stack = self.__created_stacks[id]
cfn_client = boto3.client("cloudformation",
region_name=stack.region)
cfn_client.delete_stack(StackName=stack.name)
final_status = self.__wait_for_stack_deletion(
stack.cfn_stack_id, cfn_client)
self.__assert_stack_status(final_status, "DELETE_COMPLETE")
except Exception as e:
logging.error(
"Deletion of stack {0} in region {1} failed with exception: {2}"
.format(name, region, e))
raise
del self.__created_stacks[id]
logging.info(
"Stack {0} deleted successfully in region {1}".format(
name, region))
else:
logging.warning(
"Couldn't find stack with name {0} in region {1}. Skipping deletion."
.format(name, region))
finally:
unset_credentials()
def get_az_id_to_az_name_map(region, credential):
"""Return a dict mapping AZ IDs (e.g, 'use1-az2') to AZ names (e.g., 'us-east-1c')."""
# credentials are managed manually rather than via setup_sts_credentials because this function
# is called by a session-scoped fixture, which cannot make use of a class-scoped fixture.
set_credentials(region, credential)
try:
ec2_client = boto3.client("ec2", region_name=region)
return {
entry.get("ZoneId"): entry.get("ZoneName")
for entry in ec2_client.describe_availability_zones().get("AvailabilityZones")
}
finally:
unset_credentials()
def _create_vpc_stack(request, template, region, cfn_stacks_factory):
try:
set_credentials(region, request.config.getoption("credential"))
if request.config.getoption("vpc_stack"):
logging.info("Using stack {0} in region {1}".format(request.config.getoption("vpc_stack"), region))
stack = CfnStack(name=request.config.getoption("vpc_stack"), region=region, template=template.to_json())
else:
stack = CfnStack(
name=generate_stack_name("integ-tests-vpc", request.config.getoption("stackname_suffix")),
region=region,
template=template.to_json(),
)
cfn_stacks_factory.create_stack(stack)
finally:
unset_credentials()
return stack
def create_stack(self, stack):
"""
Create a cfn stack with a given template.
:param stack: stack to create.
"""
name = stack.name
region = stack.region
try:
set_credentials(region, self.__credentials)
id = self.__get_stack_internal_id(name, region)
if id in self.__created_stacks:
raise ValueError(
"Stack {0} already exists in region {1}".format(
name, region))
logging.info("Creating stack {0} in region {1}".format(
name, region))
self.__created_stacks[id] = stack
try:
cfn_client = boto3.client("cloudformation", region_name=region)
result = cfn_client.create_stack(StackName=name,
TemplateBody=stack.template,
Parameters=stack.parameters)
stack.cfn_stack_id = result["StackId"]
final_status = self.__wait_for_stack_creation(
stack.cfn_stack_id, cfn_client)
self.__assert_stack_status(final_status, "CREATE_COMPLETE")
except Exception as e:
logging.error(
"Creation of stack {0} in region {1} failed with exception: {2}"
.format(name, region, e))
raise
logging.info("Stack {0} created successfully in region {1}".format(
name, region))
finally:
unset_credentials()
def get_availability_zones(region, credential):
"""
Return a list of availability zones for the given region.
Note that this function is called by the vpc_stacks fixture. Because vcp_stacks is session-scoped,
it cannot utilize setup_sts_credentials, which is required in opt-in regions in order to call
describe_availability_zones.
"""
set_credentials(region, credential)
az_list = []
try:
client = boto3.client("ec2", region_name=region)
response_az = client.describe_availability_zones(
Filters=[
{"Name": "region-name", "Values": [str(region)]},
{"Name": "zone-type", "Values": ["availability-zone"]},
]
)
for az in response_az.get("AvailabilityZones"):
az_list.append(az.get("ZoneName"))
finally:
unset_credentials()
return az_list
def setup_sts_credentials(region, request):
"""Setup environment for the integ tests"""
set_credentials(region, request.config.getoption("credential"))
yield
unset_credentials()