credentials.py 文件源码

def _search_md(url='http://169.254.169.254/latest/meta-data/iam/'):
    d = {}
    try:
        r = requests.get(url, timeout=.1)
        if r.content:
            fields = r.content.split('\n')
            for field in fields:
                if field.endswith('/'):
                    d[field[0:-1]] = get_iam_role(url + field)
                else:
                    val = requests.get(url + field).content
                    if val[0] == '{':
                        val = json.loads(val)
                    else:
                        p = val.find('\n')
                        if p > 0:
                            val = r.content.split('\n')
                    d[field] = val
    except (requests.Timeout, requests.ConnectionError):
        pass
    return d