def create_change_set(cfn_client, fqn, template, parameters, tags,
change_set_type='UPDATE', replacements_only=False,
service_role=None):
logger.debug("Attempting to create change set of type %s for stack: %s.",
change_set_type,
fqn)
args = generate_cloudformation_args(
fqn, parameters, tags, template,
change_set_type=change_set_type,
service_role=service_role,
change_set_name=get_change_set_name()
)
try:
response = cfn_client.create_change_set(**args)
except botocore.exceptions.ClientError as e:
if e.response['Error']['Message'] == ('TemplateURL must reference '
'a valid S3 object to which '
'you have access.'):
response = s3_fallback(fqn, template, parameters,
tags, cfn_client.create_change_set,
get_change_set_name(),
service_role)
else:
raise
change_set_id = response["Id"]
response = wait_till_change_set_complete(
cfn_client, change_set_id
)
status = response["Status"]
if status == "FAILED":
status_reason = response["StatusReason"]
if ("didn't contain changes" in response["StatusReason"] or
"No updates are to be performed" in response["StatusReason"]):
logger.debug(
"Stack %s did not change, not updating and removing "
"changeset.",
fqn,
)
cfn_client.delete_change_set(ChangeSetName=change_set_id)
raise exceptions.StackDidNotChange()
logger.warn(
"Got strange status, '%s' for changeset '%s'. Not deleting for "
"further investigation - you will need to delete the changeset "
"manually.",
status, change_set_id
)
raise exceptions.UnhandledChangeSetStatus(
fqn, change_set_id, status, status_reason
)
execution_status = response["ExecutionStatus"]
if execution_status != "AVAILABLE":
raise exceptions.UnableToExecuteChangeSet(fqn,
change_set_id,
execution_status)
changes = response["Changes"]
return changes, change_set_id
def create_change_set(cfn_client,
fqn,
template,
parameters,
tags,
replacements_only=False,
service_role=None):
logger.debug("Attempting to create change set for stack: %s.", fqn)
args = generate_cloudformation_args(fqn,
parameters,
tags,
template,
service_role=service_role,
change_set_name=get_change_set_name())
try:
response = retry_on_throttling(cfn_client.create_change_set,
kwargs=args)
except botocore.exceptions.ClientError as e:
if e.response['Error']['Message'] == ('TemplateURL must reference '
'a valid S3 object to which '
'you have access.'):
response = s3_fallback(fqn, template, parameters, tags,
cfn_client.create_change_set,
get_change_set_name(), service_role)
else:
raise
change_set_id = response["Id"]
response = wait_till_change_set_complete(cfn_client, change_set_id)
status = response["Status"]
if status == "FAILED":
status_reason = response["StatusReason"]
if "didn't contain changes" in response["StatusReason"]:
logger.debug(
"Stack %s did not change, not updating.",
fqn,
)
raise exceptions.StackDidNotChange
raise exceptions.UnhandledChangeSetStatus(fqn, change_set_id, status,
status_reason)
execution_status = response["ExecutionStatus"]
if execution_status != "AVAILABLE":
raise exceptions.UnableToExecuteChangeSet(fqn, change_set_id,
execution_status)
changes = response["Changes"]
return changes, change_set_id
