public static async Task MoveForward <TStepId, TData>(MoveToStepContext <TStepId, TData> context)
#endif
{
IStepEnumerator <TStepId, TData> stepEnumerator = context.Session.StepEnumerator;
IMoveInfo <TStepId> moveInfo = context.Session.MoveInfo;
int moveCount = 0;
do
{
stepEnumerator.MoveNext();
++moveCount;
}while (stepEnumerator.CurrentStep != null &&
!moveInfo.Comparer.Equals(stepEnumerator.CurrentStep.Id, moveInfo.Id));
context.Session.MoveInfo = null;
if (stepEnumerator.CurrentStep == null)
{
for (int i = 0; i < moveCount; ++i)
{
stepEnumerator.MovePrevious();
}
#if NET35 || NOASYNC
RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#else
await RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#endif
{
Result = ResultType.Failed,
CaughtException = new InvalidOperationException(string.Format("Could not move forward to a step with id '{0}' as the step does not exist.", moveInfo.Id)),
Session = context.Session
});
return;
}
#if NET35 || NOASYNC
context.MoveToStepFinishAction();
#else
await context.MoveToStepFinishAction();
#endif
}
public static async Task PrepareStep <TStepId, TData>(this ITransactionSession <TStepId, TData> session)
#endif
{
try
{
#if NET35 || NOASYNC
session.TransactionContext.SessionStorage.StepPrepared(session);
#else
await session.TransactionContext.SessionStorage.StepPrepared(session);
#endif
}
catch (Exception e)
{
string info = string.Format("Transaction '{0}': an error occurred during notifying ste prepared.", session.TransactionContext.Info.Name);
session.TransactionContext.Logger.ErrorFormat(e, info);
session.StepEnumerator.MovePrevious();
#if NET35 || NOASYNC
RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#else
await RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#endif
{
Session = session,
CaughtException = e,
Result = ResultType.Failed
});
#if NET35 || NOASYNC
SessionEndPreparationOperation.PrepareEndSession(new SessionEndContext <TStepId, TData>()
#else
await SessionEndPreparationOperation.PrepareEndSession(new SessionEndContext <TStepId, TData>()
#endif
{
Session = session,
RunPostActions = false,
Result = ResultType.Failed
}
.AddError(e));
}
}
public static async Task ProcessStep <TStepId, TData>(this ITransactionSession <TStepId, TData> session)
#endif
{
ITransactionStep <TStepId, TData> currentStep = session.StepEnumerator.CurrentStep;
Stopwatch watch = new Stopwatch();
try
{
watch.Start();
#if NET35 || NOASYNC
currentStep.StepAction(session.StepEnumerator.Data, session);
#else
if (currentStep.StepAction != null)
{
currentStep.StepAction(session.StepEnumerator.Data, session);
}
else
{
await currentStep.AsyncStepAction(session.StepEnumerator.Data, session);
}
#endif
watch.Stop();
if (session.ShouldLogStepExecution())
{
session.TransactionContext
.Logger
.LogExecutionTime(
watch.Elapsed,
"Transaction '{0}': execution time for step '{1}' with id '{2}'.",
session.TransactionContext.Info.Name,
session.StepEnumerator.CurrentStepIndex,
currentStep.Id);
}
if (session.Cancelled)
{
session.TransactionContext
.Logger
.InfoFormat("Transaction '{0}' cancelled.", session.TransactionContext.Info.Name);
#if NET35 || NOASYNC
RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#else
await RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#endif
{
Session = session,
Result = ResultType.Cancelled
});
}
}
catch (Exception e)
{
watch.Stop();
string info = string.Format("Transaction '{0}': an error occurred during processing step '{1}' with id '{2}', execution time '{3}'.", session.TransactionContext.Info.Name, session.StepEnumerator.CurrentStepIndex, currentStep.Id, watch.Elapsed);
session.TransactionContext.Logger.ErrorFormat(e, info);
#if NET35 || NOASYNC
RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#else
await RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#endif
{
Session = session,
CaughtException = e,
Result = ResultType.Failed
});
#if NET35 || NOASYNC
SessionEndPreparationOperation.PrepareEndSession(new SessionEndContext <TStepId, TData>()
#else
await SessionEndPreparationOperation.PrepareEndSession(new SessionEndContext <TStepId, TData>()
#endif
{
Session = session,
RunPostActions = false,
Result = ResultType.Failed
}
.AddError(e));
}
}
