def get_available_service_regions()

in aws_sra_examples/solutions/macie/macie_org/lambda/src/app.py [0:0]

• 23 lines of code
• 8 McCabe index (conditional complexity)

def get_available_service_regions(user_regions: str, aws_service: str,
                                  control_tower_regions_only: bool = False) -> list:
    """
    Get the available regions for the AWS service
    :param: user_regions
    :param: aws_service
    :return: available region list
    """
    try:
        if user_regions.strip():
            logger.info(f"USER REGIONS: {str(user_regions)}")
            service_regions = [value.strip() for value in user_regions.split(",") if value != '']
        elif control_tower_regions_only:
            cf_client = boto3.Session().client('cloudformation')
            paginator = cf_client.get_paginator("list_stack_instances")
            region_set = set()
            for page in paginator.paginate(StackSetName="AWSControlTowerBP-BASELINE-CLOUDWATCH"):
                for summary in page["Summaries"]:
                    region_set.add(summary["Region"])
            service_regions = list(region_set)
        else:
            service_regions = boto3.session.Session().get_available_regions(aws_service)

        logger.info(f"SERVICE REGIONS: {service_regions}")
    except ClientError as ce:
        logger.error(f"get_available_service_regions error: {ce}")
        raise ValueError("Error getting service regions")

    available_regions = check_available_regions(service_regions)
    logger.info(f"AVAILABLE REGIONS: {available_regions}")
    return available_regions