public static async Task EnsurePersistentPath(this ZooKeeper client, string path)
{
__check_path__(path);
if (await client.ExistAsync_(path))
{
return;
}
var sp = path.SplitZookeeperPath();
var p = string.Empty;
foreach (var itm in sp)
{
p += $"/{itm}";
if (!await client.ExistAsync_(p))
{
await client.CreateNode_(p, CreateMode.PERSISTENT);
}
}
}
public static async Task DeleteNodeRecursively_(this ZooKeeper client, string path)
{
__check_path__(path);
var handlered_list = new List <string>();
async Task __delete_node__(string pre_path, string p)
{
var pre_node = pre_path.SplitZookeeperPath();
var cur_node = p.SplitZookeeperPath();
if (ValidateHelper.IsEmpty(cur_node))
{
throw new Exception($"不能删除：{p}");
}
var current_node = new List <string>().AddList_(pre_node).AddList_(cur_node).AsZookeeperPath();
//检查死循环
handlered_list.AddOnceOrThrow(current_node, $"递归发生错误");
if (!await client.ExistAsync_(current_node))
{
return;
}
var children = await client.GetNodeChildren(current_node);
if (children.Any())
{
foreach (var child in children)
{
//递归
await __delete_node__(current_node, child);
}
}
await client.deleteAsync(current_node);
}
//入口
await __delete_node__(string.Empty, path);
}
public static async Task <bool> StopWatchNode_(this ZooKeeper client, string path)
{
var res = await client.ExistAsync_(path);
return(res);
}
public static async Task <bool> WatchNode_(this ZooKeeper client, string path, Watcher watcher)
{
var res = await client.ExistAsync_(path, watcher ?? throw new ArgumentNullException(nameof(watcher)));
return(res);
}