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[cloud] Add jittered backoff+retries to CloudFormation module (#27907)

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mzizzi 2017-08-23 11:38:19 -04:00 committed by Ryan Brown
parent 4070a22c5b
commit 587ab33415
1 changed files with 13 additions and 4 deletions
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17
lib/ansible/modules/cloud/amazon/cloudformation.py
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@ -417,13 +417,10 @@ def stack_operation(cfn, stack_name, operation):
time.sleep(5) time.sleep(5)
return {'failed': True, 'output':'Failed for unknown reasons.'} return {'failed': True, 'output':'Failed for unknown reasons.'}
@AWSRetry.backoff(tries=3, delay=5)
def describe_stacks(cfn, stack_name):
return cfn.describe_stacks(StackName=stack_name)
def get_stack_facts(cfn, stack_name): def get_stack_facts(cfn, stack_name):
try: try:
stack_response = describe_stacks(cfn, stack_name) stack_response = cfn.describe_stacks(StackName=stack_name)
stack_info = stack_response['Stacks'][0] stack_info = stack_response['Stacks'][0]
#except AmazonCloudFormationException as e: #except AmazonCloudFormationException as e:
except (botocore.exceptions.ValidationError,botocore.exceptions.ClientError) as err: except (botocore.exceptions.ValidationError,botocore.exceptions.ClientError) as err:
@ -509,6 +506,18 @@ def main():
except botocore.exceptions.NoCredentialsError as e: except botocore.exceptions.NoCredentialsError as e:
module.fail_json(msg=boto_exception(e)) module.fail_json(msg=boto_exception(e))
# Wrap the cloudformation client methods that this module uses with
# automatic backoff / retry for throttling error codes
backoff_wrapper = AWSRetry.jittered_backoff(retries=10, delay=3, max_delay=30)
cfn.describe_stack_events = backoff_wrapper(cfn.describe_stack_events)
cfn.create_stack = backoff_wrapper(cfn.create_stack)
cfn.list_change_sets = backoff_wrapper(cfn.list_change_sets)
cfn.create_change_set = backoff_wrapper(cfn.create_change_set)
cfn.update_stack = backoff_wrapper(cfn.update_stack)
cfn.describe_stacks = backoff_wrapper(cfn.describe_stacks)
cfn.list_stack_resources = backoff_wrapper(cfn.list_stack_resources)
cfn.delete_stack = backoff_wrapper(cfn.delete_stack)
stack_info = get_stack_facts(cfn, stack_params['StackName']) stack_info = get_stack_facts(cfn, stack_params['StackName'])
if state == 'present': if state == 'present':