static void Main(string[] args)
{
TMParser parser = new TMParser();
if (!parser.Parse(args))
{
return;
}
var serverProv = new SoapServerFormatterSinkProvider {
TypeFilterLevel = TypeFilterLevel.Full
};
var clientProv = new SoapClientFormatterSinkProvider();
IDictionary props = new Hashtable();
props["port"] = Int32.Parse(parser["p"]);
var channel = new HttpChannel(props, clientProv, serverProv);
ChannelServices.RegisterChannel(channel, false);
RemotingConfiguration.RegisterWellKnownServiceType
(Type.GetType("MyTM.MyTM") // full type name
, "TM.soap" // URI
, System.Runtime.Remoting.WellKnownObjectMode.Singleton // instancing mode
);
while (true)
{
Thread.Sleep(2000);
TwoPhaseCommit.PrintMessage();
}
}
public MyTM()
{
Console.WriteLine("TM: Transaction Manager instantiated");
// by default, the TwoPhaseCommit shall not have the debugging properties PrepareFail and CommitFail set
TwoPhaseCommit.PrepareFail = false;
TwoPhaseCommit.CommitFail = false;
TwoPhaseCommit.StartUp();
_transactionScavengerThread = new Thread(TransactionScavenger)
{
Name = "TransactionScavengerThread"
};
_transactionScavengerThread.Start();
}
/// <summary>
/// Call from WC in response to a client's commit
/// </summary>
/// <param name="context"></param>
public void Commit(TP.Transaction context)
{
WaitTillReady();
lock (_resourceManagersEnlistedInTransactions)
{
if (_resourceManagersEnlistedInTransactions.ContainsKey(context))
{
CommitedTransaction trans = TwoPhaseCommit.Commit(context, _resourceManagersEnlistedInTransactions[context]);
trans.DoneEvent.WaitOne(TransactionTimeout * 1000);
_resourceManagersEnlistedInTransactions.Remove(context);
}
}
Console.WriteLine(string.Format("TM: Transaction {0} commited", context.Id));
}
/// <summary>
/// The method to do two phrase commit
/// This method shall be hosted in a new thread.
/// The caller can wait on the DoneEvent.
/// </summary>
public void StartCommit(bool prepareFail = false, bool commitFail = false)
{
this.prepareFail = prepareFail;
this.commitFail = commitFail;
bool isStepComplete = false;
var list = this.ResouceManagers.ResourceManagers;
for (int i = 0; i < list.Count; i++)
{
rmCommitStates[i] = CommitState.Committed;
}
TwoPhaseCommit.WriteLog();
Prepare();
if ((isStepComplete = this.stepWaitEvent.WaitOne(stepTimeout)))
{
TwoPhaseCommit.WriteLog();
isStepComplete = WaitStepWithExpBackoff(Commit);
if (isStepComplete)
{
TwoPhaseCommit.WriteLog();
TwoPhaseCommit.DoneCommit(this.Context);
DoneEvent.Set();
}
else
{
string outstring = string.Format("2PC:Retry Commit {0}\r", this.Context.Id);
this.Message += outstring;
Console.Write(string.Format("2PC:Retry Commit {0}\r", this.Context.Id));
WaitStepWithExpBackoff(Commit);
}
}
else
{
// Presume abort
Rollback();
TwoPhaseCommit.WriteLog();
TwoPhaseCommit.DoneCommit(this.Context);
DoneEvent.Set();
}
}
/// <summary>
/// TM shall call this function when it restarts.
/// if return is true
/// 1. TM shall delete the transaction or retry commit if the state after recover is Rollbacked.
/// 2. TM shall delete the transaction if the state after recover is done;
/// if return is false
/// TM shall retry the recover process;
/// </summary>
/// <return>false if the recover process failed.</return>
public bool Recover()
{
foreach (RM rm in this.ResouceManagers.ResourceManagers)
{
RM inTM = null;
while (inTM == null)
{
try
{
inTM = MyTM.StaticGetResourceMananger(rm.GetName());
}
catch (WebException)
{
}
if (inTM == null)
{
MyTM.StaticRegister(rm);
}
}
}
switch (State)
{
case CommitState.Committed:
Rollback();
TwoPhaseCommit.WriteLog();
break;
case CommitState.Prepared:
Commit();
TwoPhaseCommit.WriteLog();
break;
default:
this.stepWaitEvent.Set();
break;
}
return(this.stepWaitEvent.WaitOne(stepTimeout));
}
