public async Task Handler(TransactionContext context, ILmsMethodInvocation invocation)
{
IParticipant participant = null;
switch (context.Action)
{
case ActionStage.Trying:
try
{
participant = executor.PreTryParticipant(context, invocation);
await invocation.ProceedAsync();
if (participant != null)
{
participant.Status = ActionStage.Trying;
}
}
catch (Exception e)
{
if (participant != null)
{
LmsTransactionHolder.Instance.CurrentTransaction.RemoveParticipant(participant);
}
throw;
}
break;
case ActionStage.Confirming:
await invocation.ExcuteTccMethod(TccMethodType.Confirm);
break;
case ActionStage.Canceling:
await invocation.ExcuteTccMethod(TccMethodType.Cancel);
break;
}
}
