/// <summary>
/// 参加指定标识的分布式事务，直到事务执行完成。一个分布式事务包含若干本地事务
/// </summary>
/// <param name="identity">标识一个分布式事务</param>
/// <returns></returns>
public bool AttendTransaction(string identity)
{
DistTransInfo info = new DistTransInfo();
info.ClientIdentity = base.CurrentContext.Request.ClientIdentity;
info.CurrentDTCState = DistTrans3PCState.CanCommit;
info.LastStateTime = DateTime.Now;
info.TransIdentity = identity;
//DTResourceList.Add(info);
DateTime dtcStart = DateTime.Now;
//获取一个当前事务标识的协调器线程
DTController controller = DTController.CheckStartController(identity);
CurrentDTCState = DistTrans3PCState.CanCommit;
while (CurrentDTCState != DistTrans3PCState.Completed)
{
//获取资源服务器的事务状态，资源服务器可能自身或者因为网络情况出错
if (!SendDTCState(info, controller, identity))
{
break;
}
}
SendDTCState(info, controller, identity);
DTController.RemoveController(identity);
Console.WriteLine("DTC Current Use time:{0}(s)", DateTime.Now.Subtract(dtcStart).TotalSeconds);
return(true);
}
private bool SendDTCState(DistTransInfo info, DTController controller, string identity)
{
string clientIdentity = string.Format("[{0}:{1}-{2}]", base.CurrentContext.Request.ClientIP,
base.CurrentContext.Request.ClientPort,
base.CurrentContext.Request.ClientIdentity);
try
{
Console.WriteLine("DTC Service Callback {0} Message:{1}", clientIdentity, CurrentDTCState);
info.CurrentDTCState = base.CurrentContext.CallBackFunction <DistTrans3PCState, DistTrans3PCState>(CurrentDTCState);
info.LastStateTime = DateTime.Now;
CurrentDTCState = controller.GetDTCState(info.CurrentDTCState);
return(true);
}
catch (Exception ex)
{
Console.WriteLine("DTC Service Callback {0} Error:{1}", clientIdentity, ex.Message);
return(false);
}
}
