validation.py 文件源码

def _validate_existing_id(config, component_id):
    """Check that the id passed as parameter is defined in the configuration

    :type config: dict
    :param config: configuration model for the whole system
    :type component_id: str
    :param component_id: component ID to be found in configuration
    """
    found_id = False
    for comp_type in valid_connection_types.keys():
        if component_id in config[comp_type].keys():
            found_id = True
    if not found_id:
        raise voluptuous.Invalid([
            'In "connections", component `{}` hasn\'t been defined'
            .format(component_id)
        ], [])