public async Task CreateTest()
{
var path = $"/{Guid.NewGuid():N}";
if (await _client.ExistsAsync(path))
{
await _client.DeleteAsync(path);
}
await _client.CreateEphemeralAsync(path, Encoding.UTF8.GetBytes("abc"));
var data = (await _client.GetDataAsync(path)).ToArray();
await _client.DeleteAsync(path);
}
public static async Task <IZookeeperClient> Register(ServiceInformation service)
{
IZookeeperClient zk = GetZooKeeper();
await CheckOrCreateRoot(zk);
string servicesPath = $"{Root}/{service.Key}";
//todo 先获取后追加
if (!await zk.ExistsAsync(servicesPath))
{
await zk.CreatePersistentAsync(servicesPath, GetData(string.Empty));
}
string serviceNodePaht = $"{servicesPath}/{service.Host}:{service.Port}";
await zk.CreateEphemeralAsync(serviceNodePaht, GetData(service));
return(zk);
}
private void CreateHostNode(string servicePath, ServicePublishInfo servicePublishInfo)
{
var hostName = Utils.GetHostName(servicePublishInfo.Host, servicePublishInfo.Port);
var hostPath = GetHostPath(servicePath, hostName);
var data = MessagePackSerializer.Serialize(servicePublishInfo);
if (!client.ExistsAsync(hostPath).Result)
{
try
{
client.CreateEphemeralAsync(hostPath, data).Wait();
}
catch (AggregateException ex)
{
if (!(ex.InnerException is NodeExistsException))
{
throw ex;
}
}
}
}
/// <summary>
/// 创建短暂的节点。
/// </summary>
/// <param name="client">ZooKeeper客户端。</param>
/// <param name="path">节点路径。</param>
/// <param name="data">节点数据。</param>
/// <param name="isSequential">是否按顺序创建。</param>
/// <returns>节点路径。</returns>
/// <remarks>
/// 因为使用序列方式创建节点zk会修改节点name，所以需要返回真正的节点路径。
/// </remarks>
public static Task <string> CreateEphemeralAsync(this IZookeeperClient client, string path, byte[] data, bool isSequential = false)
{
return(client.CreateEphemeralAsync(path, data, ZooDefs.Ids.OPEN_ACL_UNSAFE, isSequential));
}
public static Task CreateEphemeralAsync(this IZookeeperClient client, string path, byte[] data)
{
return(client.CreateEphemeralAsync(path, data, ZooDefs.Ids.OPEN_ACL_UNSAFE));
}