hookenv.py 文件源码

def status_get():
    """Retrieve the previously set juju workload state and message

    If the status-get command is not found then assume this is juju < 1.23 and
    return 'unknown', ""

    """
    cmd = ['status-get', "--format=json", "--include-data"]
    try:
        raw_status = subprocess.check_output(cmd)
    except OSError as e:
        if e.errno == errno.ENOENT:
            return ('unknown', "")
        else:
            raise
    else:
        status = json.loads(raw_status.decode("UTF-8"))
        return (status["status"], status["message"])