public bool GetNodeValue(string nodePath, ref string nodeValue, ref string message)
{
nodeValue = string.Empty;
try
{
using (ZooKeeper zk = new ZooKeeper(AppSettingsHelper.ZKServer, TimeSpan.FromSeconds(AppSettingsHelper.ZKSessionTimeOut), null))
{
ZooKeeper.WaitUntilConnected(zk);
Stat stat = zk.Exists(nodePath, true);
if (stat == null)
{
message = string.Format("该节点【{0}】已被别人删除。", nodePath);
return(false);
}
byte[] _nodeValue = zk.GetData(nodePath, false, stat);
if (_nodeValue != null && _nodeValue.Length > 0)
{
nodeValue = Encoding.UTF8.GetString(_nodeValue);
}
}
}
catch (Exception ex)
{
message = string.Format("JinRi.Fx.Manage:{0}GetNodeValue()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
log.Error(message);
message = string.Format("GetNodeValue()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
return(false);
}
return(true);
}
public bool AddNode(string nodePath, string nodeValue, ref string message)
{
try
{
using (ZooKeeper zk = new ZooKeeper(AppSettingsHelper.ZKServer, TimeSpan.FromSeconds(AppSettingsHelper.ZKSessionTimeOut), null))
{
ZooKeeper.WaitUntilConnected(zk);
if (zk.Exists(nodePath, false) == null)
{
zk.Create(nodePath, Encoding.UTF8.GetBytes(nodeValue), Ids.OPEN_ACL_UNSAFE, CreateMode.Persistent);
return(true);
}
else
{
zk.Exists(nodePath, true);
message = string.Format("该节点【{0}】已被别人新增。", nodePath);
return(false);
}
}
}
catch (Exception ex)
{
message = string.Format("JinRi.Fx.Manage:{0}AddNode()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
log.Error(message);
message = string.Format("AddNode()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
return(false);
}
}
private void DoConnect()
{
ConnectSettingWindow win = new ConnectSettingWindow();
bool?result = win.ShowDialog();
if (result.HasValue && result.Value)
{
var vm = win.DataContext as ConnectSettingWindowVM;
try
{
this.Watcher = new ZookeeperWatcher(this);
_zk = new ZooKeeper(vm.ConnectionString, TimeSpan.FromMilliseconds(double.Parse(vm.Timeout)), this.Watcher);
ZooKeeper.WaitUntilConnected(_zk);
//added by Yang Li
this.ConnectionString = vm.ConnectionString;
this.GetZookeeperNodes();
}
catch (Exception ex)
{
this.AddLog(LogType.Fatal, ex.Message);
this.DoDisconnect();
}
finally
{
this.RaiseToolBarCanExecuteChanged();
}
}
}
public bool DeleteNode(string nodePath, ref string message)
{
try
{
using (ZooKeeper zk = new ZooKeeper(AppSettingsHelper.ZKServer, TimeSpan.FromSeconds(AppSettingsHelper.ZKSessionTimeOut), null))
{
ZooKeeper.WaitUntilConnected(zk);
Stat stat = zk.Exists(nodePath, false);
if (stat != null)
{
zk.Delete(nodePath, stat.Version);
}
}
}
catch (Exception ex)
{
message = string.Format("JinRi.Fx.Manage:{0}DeleteNode()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
log.Error(message);
message = string.Format("DeleteNode()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
return(false);
}
return(true);
}
public ConfigServiceClient(string serviceAddress, TimeSpan timeout)
{
try
{
this.ZK = new ZooKeeper(serviceAddress, timeout, new ConfigServiceWatcher(this));
ZooKeeper.WaitUntilConnected(this.ZK);
}
catch
{
this.Close();
}
}
static void Main(string[] args)
{
using (ZooKeeper zk = new ZooKeeper(ConfigServiceHelper.ZKServer, TimeSpan.FromSeconds(ConfigServiceHelper.ZKSessionTimeOut), null))
{
ZooKeeper.WaitUntilConnected(zk);
string cookieNameKeyPath = string.Format("{0}/{1}", ConfigServiceHelper.ZKRootPathWithAppID, "CookieKeyName");
if (zk.Exists(cookieNameKeyPath, false) != null)
{
byte[] _nodeValue = zk.GetData(cookieNameKeyPath, false, null);
Console.WriteLine(Encoding.UTF8.GetString(_nodeValue));
}
}
Console.ReadLine();
}
public bool UpdateNodeValue(string nodePath, string newNodeValue, ref string message)
{
try
{
byte[] newData = Encoding.UTF8.GetBytes(newNodeValue);
using (ZooKeeper zk = new ZooKeeper(AppSettingsHelper.ZKServer, TimeSpan.FromSeconds(AppSettingsHelper.ZKSessionTimeOut), null))
{
ZooKeeper.WaitUntilConnected(zk);
Stat stat = zk.Exists(nodePath, false);
if (stat == null)
{
message = string.Format("该节点【{0}】已被别人删除。", nodePath);
return(false);
}
byte[] oldValue = zk.GetData(nodePath, false, stat);
if (oldValue == null || oldValue.Length < 1)
{
if (string.IsNullOrWhiteSpace(newNodeValue))
{
message = "和原来的值一样，所以无需更新。";
return(false);
}
}
string oldValueStr = string.Empty;
if (oldValue != null && oldValue.Length > 0)
{
oldValueStr = Encoding.UTF8.GetString(oldValue);
}
if (newNodeValue.Equals(oldValueStr))
{
message = "和原来的值一样，所以无需更新。";
return(false);
}
Stat newStat = zk.SetData(nodePath, newData, stat.Version);
return(true);
}
}
catch (Exception ex)
{
message = string.Format("JinRi.Fx.Manage:{0}UpdateNodeValue()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
log.Error(message);
message = string.Format("UpdateNodeValue()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
return(false);
}
}
public void Init()
{
try
{
zk = new ZooKeeper(ZKServerInfo.ZKServer, TimeSpan.FromSeconds(ZKServerInfo.ZKSessionTimeOut), new LogCenterWatcher(this));
ZooKeeper.WaitUntilConnected(zk);
if (zk.Exists(ZKServerInfo.ZKLogCenterRootPath, false) != null)
{
zk.GetChildren(ZKServerInfo.ZKLogCenterRootPath, true);
}
}
catch (Exception ex)
{
m_localLog.Error("连接Zookeeper服务失败", ex);
}
}
public bool GetNodeList(TreeZNode root, List <TreeZNode> nodeList, ref string message)
{
try
{
using (ZooKeeper zk = new ZooKeeper(AppSettingsHelper.ZKServer, TimeSpan.FromSeconds(AppSettingsHelper.ZKSessionTimeOut), null))
{
ZooKeeper.WaitUntilConnected(zk);
GetNodeListLoop(zk, root, nodeList);
}
}
catch (Exception ex)
{
message = string.Format("JinRi.Fx.Manage:{0}GetNodeList()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
log.Error(message);
message = string.Format("GetNodeList()方法抛异常：{0}[{1}]{2}。", Environment.NewLine, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), ex.ToString());
return(false);
}
return(true);
}
/// <summary>
/// 初始化
/// </summary>
public void Init()
{
zk = new ZooKeeper(MasterElectionHelper.ZKServer, TimeSpan.FromSeconds(MasterElectionHelper.ZKSessionTimeOut), new MasterElectionWatcher(this));
ZooKeeper.WaitUntilConnected(zk);
if (zk.Exists(MasterElectionHelper.ZKRootPath, false) == null)
{
zk.Create(MasterElectionHelper.ZKRootPath, string.Empty.GetBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.Persistent);
zk.GetChildren(MasterElectionHelper.ZKRootPath, true);
}
string ip = MasterElectionHelper.GetHostIP().ToString();
string nodePrefixName = string.Format("{0}_", ip.Replace(".", "-"));
string nodePath = string.Format("{0}/{1}", MasterElectionHelper.ZKRootPath, nodePrefixName);
if (string.IsNullOrWhiteSpace(this.clientNodePath) || zk.Exists(this.clientNodePath, false) == null)
{
this.clientNodePath = zk.Create(nodePath, string.Empty.GetBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.EphemeralSequential);
}
zk.GetChildren(MasterElectionHelper.ZKRootPath, true);
}
public bool ConnectZookeeper(string connectionString, TimeSpan timeout)
{
try
{
if (_zk == null)
{
_zk = new ZooKeeper(connectionString, timeout, new ZookeeperWatcher(this));
ZooKeeper.WaitUntilConnected(_zk);
}
return(true);
}
catch (Exception ex)
{
this.AddLog(LogType.Fatal, ex.Message);
if (_zk != null)
{
_zk.Dispose();
}
_zk = null;
}
return(false);
}