bootstrap.py 文件源码

def write_environment_info(stackname, overwrite=False):
    """Looks for /etc/cfn-info.json and writes one if not found.
    Must be called with an active stack connection.

    This gives Salt the outputs available at stack creation, but that were not
    available at template compilation time.
    """
    if not files.exists("/etc/cfn-info.json") or overwrite:
        LOG.info('no cfn outputs found or overwrite=True, writing /etc/cfn-info.json ...')
        infr_config = utils.json_dumps(template_info(stackname))
        return put(StringIO(infr_config), "/etc/cfn-info.json", use_sudo=True)
    LOG.debug('cfn outputs found, skipping')
    return []

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