public ZookeeperConfigurationWatcher(ZookeeperConfigurationProvider zookeeperConfigurationProvider)
{
this.zookeeperConfigurationProvider = zookeeperConfigurationProvider;
var options = zookeeperConfigurationProvider.ZookeeperConfigurationSource.ZookeeperOptions;
zookeeperHelper = new ZookeeperHelper(options.Address, options.RootPath);
//初次连接后，立即
zookeeperHelper.OnConnected += () =>
{
if (options.Scheme != AuthScheme.World)
{
zookeeperHelper.Authorize(options.Scheme, options.Auth);
}
zookeeperConfigurationProvider.Reload();
};
zookeeperHelper.Connect();
//int timeOut = 10;
//while (!zookeeperHelper.Connected && timeOut-- > 0)
//{
// Thread.Sleep(1000); //停一秒，等待连接完成
//}
if (!zookeeperHelper.Connected)
{
throw new TimeoutException($"connect to zookeeper [{options.Address}] timeout");
}
if (options.ReloadOnChange)
{
//监听根节点下所有的znode节点，当任意节点发生改变后，即立刻重新加载
zookeeperHelper.WatchAllAsync(ze =>
{
if (ze.Type != ZookeeperEvent.EventType.None)
{
//使用一个异步去完成，同步会造成死锁
Task.Run(() =>
{
zookeeperConfigurationProvider.Reload();
});
}
}).Wait();
}
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="lockerPath">分布式锁的根路径</param>
/// <param name="sessionTimeout">回话过期时间</param>
/// <param name="address">集群地址</param>
public ZookeeperLocker(string lockerPath, int sessionTimeout, params string[] address)
{
this.address = address.ToArray();
zookeeperHelper = new ZookeeperHelper(address, lockerPath);
if (sessionTimeout > 0)
{
zookeeperHelper.SessionTimeout = sessionTimeout;
}
if (!zookeeperHelper.Connect())
{
throw new Exception("connect failed:" + string.Join(",", address));
}
lock (locker)
{
if (!zookeeperHelper.Exists())//根节点不存在则创建
{
zookeeperHelper.SetData("", "", true);
}
}
}
public DefaultWatcher(ZookeeperHelper zookeeperHelper, EventWaitHandle ewh)
{
this.ewh = ewh;
this.zookeeperHelper = zookeeperHelper;
}