def get_az_id_info_from_instance_metadata()

in src/mount_efs/__init__.py [0:0]

• 28 lines of code
• 5 McCabe index (conditional complexity)

def get_az_id_info_from_instance_metadata(config, options):
    logging.debug("Retrieve availability-zone-id from instance metadata")
    instance_az_id_url = get_instance_az_id_metadata_url(config)
    metadata_unsuccessful_resp = (
        "Unsuccessful retrieval of metadata at %s." % instance_az_id_url
    )
    metadata_url_error_msg = (
        "Unable to reach %s to retrieve instance metadata." % instance_az_id_url
    )

    global INSTANCE_AZ_ID_METADATA
    if INSTANCE_AZ_ID_METADATA:
        logging.debug(
            "Instance az_id already retrieved in previous call, use the cached values."
        )
        az_id_metadata = INSTANCE_AZ_ID_METADATA
    else:
        az_id_metadata = url_request_helper(
            config,
            instance_az_id_url,
            metadata_unsuccessful_resp,
            metadata_url_error_msg,
        )
        INSTANCE_AZ_ID_METADATA = az_id_metadata

    # ECS Fargate returns a json response with the AZ-name which we convert to AZ-ID
    if az_id_metadata and is_ecs_fargate_client(config):
        return get_az_id_from_ecs_fargate_response(config, options, az_id_metadata)
    elif az_id_metadata:
        return az_id_metadata

    return None