private void Setup()
{
_di.BeginLifetimeScope().Returns(_di);
_di.Resolve <IStoreSagaState>().Returns(_storage);
_di.Resolve(typeof(MySagaState)).Returns(_saga);
_storage.GetSaga(Arg.Any <string>(), typeof(MySagaState)).Returns(_saga);
_invoker.HandlerType.Returns(typeof(Handler));
_invoker.InstantiateHandler(_di).Returns(_handler);
}
public virtual void Handle(IMessage msg, string processor)
{
using (var scope = Container.BeginLifetimeScope())
{
dynamic handler = HandlerInvoker.InstantiateHandler(scope);
var correlationId = handler.GetCorrelationId(msg as IEvent);
var tries = 0;
while (tries < 5)
{
LogManager.LogDebug(this, "Loading saga {0} with correlation id {1}", SagaStateType.Name, correlationId);
dynamic data = GetSagaState(msg as IEvent, scope, correlationId);
if (data == null || data.IsCompleted)
{
this.LogInfo("Saga '{0}' completed or not found. Ignoring message '{1}'",
SagaStateType.FullName, msg.GetType().FullName);
return;
}
string stateName = data.GetType().ToString();
this.LogDebug("Handling saga '{2}' using saga state '{0}' with correlation id {1}", stateName, (string)correlationId, SagaStateType.Name);
handler.Data = data;
HandlerInvoker.HandleMessage(msg, handler, processor);
try
{
SaveSagaState(data, scope, correlationId);
break;
}
catch (SagaConcurrencyException)
{
tries++;
this.LogInfo("Saga '{0}' was already updated. Retrying...", SagaStateType.FullName);
}
}
if (tries >= 5)
{
throw new SagaExecutorException("Could no save saga state after 5 tries. Aborting.");
}
}
}
