utils.py 文件源码

def find_affected_but_not_down(netbox_going_down, netboxes):
    """Mark affected but not down because of redundancy boxes"""
    graph = build_layer2_graph()
    if not graph.has_node(netbox_going_down):
        return [netbox_going_down]
    graph.remove_node(netbox_going_down)
    masters = find_uplink_nodes(netbox_going_down)
    redundant = []
    for netbox in netboxes:
        if netbox_going_down == netbox:
            continue
        if any(nx.has_path(graph, master, netbox) for master in masters):
            redundant.append(netbox)

    return redundant