/// <summary>
/// connect to zookeeper
/// </summary>
/// <param name="name"></param>
/// <param name="connection"></param>
private void ConnectToZookeeper(string name, IConnection connection)
{
var connectRequest = new Data.ConnectRequest(this._protocolVersion,
this._zkClient._lastZxid,
(int)this._zkClient._sessionTimeout.TotalMilliseconds,
this._sessionID,
this._sessionPassword);
var request = new Request <ZookResponse>(this._zkClient.NextRequestSeqID(), "connect",
Utils.Marshaller.Serialize(connectRequest, true),
ex => connection.BeginDisconnect(ex),
response =>
{
Data.ConnectResponse result = null;
try { result = Utils.Marshaller.Deserialize <Data.ConnectResponse>(response.Payload); }
catch (Exception ex) { connection.BeginDisconnect(ex); return; }
if (result.SessionTimeOut <= 0) //session expired
{
this._protocolVersion = 0;
this._sessionID = 0;
this._negotiatedSessionTimeout = 0;
this._sessionPassword = new byte[16];
connection.BeginDisconnect(new ApplicationException("zookeeper session expired"));
this._zkClient.SetKeeperState(Data.KeeperState.Expired); return;
}
this._protocolVersion = result.ProtocolVersion;
this._negotiatedSessionTimeout = result.SessionTimeOut;
this._sessionID = result.SessionID;
this._sessionPassword = result.SessionPassword;
this._currConnection = connection;
this._zkClient.SetKeeperState(Data.KeeperState.SyncConnected);
this.FireServerAvailable(name, connection);
})
{
Tag = "connect"
};
connection.UserData = request;
connection.BeginSend(request);
}
/// <summary>
/// connecto to zookeeper
/// </summary>
/// <param name="connection"></param>
/// <returns></returns>
private Task ConnectToZookeeper(IConnection connection)
{
var taskSource = new TaskCompletionSource <bool>();
var request = base.NewRequest("zk.connect", Utils.Marshaller.Serialize(new Data.ConnectRequest(
this._protocolVersion, this._lastZxid, (int)this._sessionTimeout.TotalMilliseconds, this._sessionID, this._sessionPassword)),
base.MillisecondsReceiveTimeout,
ex => taskSource.TrySetException(ex),
message =>
{
Data.ConnectResponse result = null;
try { result = Utils.Marshaller.Deserialize <Data.ConnectResponse>(message.Payload); }
catch (Exception ex) { taskSource.TrySetException(ex); return; }
if (result.SessionTimeOut <= 0) //session expired
{
this._protocolVersion = 0;
this._sessionID = 0;
this._negotiatedSessionTimeout = 0;
this._sessionPassword = new byte[16];
this.SetKeeperState(Data.KeeperState.Expired);
taskSource.TrySetException(new ApplicationException("zookeeper session expired"));
return;
}
this._protocolVersion = result.ProtocolVersion;
this._negotiatedSessionTimeout = result.SessionTimeOut;
this._sessionID = result.SessionID;
this._sessionPassword = result.SessionPassword;
this.SetKeeperState(Data.KeeperState.SyncConnected);
taskSource.TrySetResult(true);
});
connection.UserData = request;
connection.BeginSend(request);
return(taskSource.Task);
}
