hookenv.py 文件源码

def config(scope=None):
    """Juju charm configuration"""
    config_cmd_line = ['config-get']
    if scope is not None:
        config_cmd_line.append(scope)
    else:
        config_cmd_line.append('--all')
    config_cmd_line.append('--format=json')
    try:
        config_data = json.loads(
            subprocess.check_output(config_cmd_line).decode('UTF-8'))
        if scope is not None:
            return config_data
        return Config(config_data)
    except ValueError:
        return None