/// <summary>
/// 获取path的数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="watcher">监听path节点的watcher</param>
/// <returns>返回数据</returns>
public static string GetNodeData(string path, Watcher watcher = null)
{
int tryNum = 0;
gotoLable:
logger.LogInformation($"GetNodeData获取数据:path={path},watcher={watcher?.GetType()?.FullName}");
try
{
var result = watcher == null
? currentZookeeper.getDataAsync(path, true)
: currentZookeeper.getDataAsync(path, watcher);
result.Wait();
byte[] rst = result.Result.Data;
if (rst == null || rst.Length < 1)
{
return(null);
}
return(Encoding.UTF8.GetString(rst));
}
catch (KeeperException.NoNodeException nodeEx) // 这样的异常不用重连
{
logger.LogError(nodeEx, $"GetNodeData 获取数据节点不存在 NoNodeException:{path}");
return(null);
}
catch (Exception e)
{
logger.LogError(e, $"GetNodeData获取数据异常:path={path},watcher={watcher?.GetType()?.FullName}");
tryNum += 1;
if (tryNum < 3)
{
reConnection(e);
Thread.Sleep(500);
goto gotoLable;
}
}
return(null);
}
public void Register()
{
var watches = GetWatches();
HashSet <Watcher> watchers;
watches.TryGetValue(clientPath, out watchers);
if (watchers == null)
{
watchers = new HashSet <Watcher>();
watches[clientPath] = watchers;
}
if (!watchers.Any(p => p.GetType() == watcher.GetType()))
{
watchers.Add(watcher);
}
}