protected virtual bool CallHandler(object message, object handler, MsgHandlerInfo mhi, IMessageBus bus)
{
if (handler is SagaBase)
{
if (SagaHandler == null)
{
throw new PermanentMessageProcessingException("Saga support has not been enabled");
}
string id = null;
if (bus != null && bus.CurrentMessageInfo != null)
{
id = bus.CurrentMessageInfo.CorrelationId;
}
bool isInitiator = mhi.InitiatedByGenericType.IsAssignableFrom(handler.GetType());
var b = SagaHandler.DispatchToSaga(id, message, isInitiator, false, (SagaBase)handler, delegate(SagaBase saga)
{
mhi.HandleMethod(saga, message);
});
if (b == Sagas.SagaStateHelper.SagaDispatchResult.ConcurrentUpdateHandleLater)
{
//bus.HandleCurrentMessageLater(DateTime.Now.AddSeconds(1));
//throw new Exception("Should not happen");
throw new RetryMessageProcessingException(DateTime.Now.AddSeconds(1), "saga locked");
}
return(true);
}
else
{
mhi.HandleMethod(handler, message);
return(true);
}
}
protected MsgHandlerInfo GetOutHandlersFor(Type msgType)
{
MsgHandlerInfo mi;
if (_outHandlers.TryGetValue(msgType, out mi))
{
return(mi);
}
lock (this)
{
if (_outHandlers.TryGetValue(msgType, out mi))
{
return(mi);
}
mi = new MsgHandlerInfo();
mi.MessageType = msgType;
mi.MessageHandlerGenericType = typeof(IOutgoingMessageHandler <>).MakeGenericType(msgType);
mi.InitiatedByGenericType = typeof(IOutgoingMessageHandler <>).MakeGenericType(msgType);
mi.HandleMethod = DelegateFactory.CreateMessageHandlerDelegate(mi.MessageHandlerGenericType.GetMethod("OnMessageSend"));
_outHandlers[msgType] = mi;
return(mi);
}
}
protected virtual bool GetOutgoingHandlersForMessageType(Type t, out ICollection <object> handlers, out MsgHandlerInfo handlerInfo)
{
handlers = null;
handlerInfo = GetOutHandlersFor(t);
if (handlerInfo == null)
{
return(false);
}
handlers = ServiceLocator.GetAllInstances(handlerInfo.MessageHandlerGenericType);
return(true);
}
protected virtual bool GetAllHandlersForMessageType(Type t, out ICollection <object> handlers, out MsgHandlerInfo handlerInfo)
{
handlers = null;
handlerInfo = GetHandlersFor(t);
if (handlerInfo == null)
{
return(false);
}
var nh = handlerInfo._numHandlersFound;
handlers = ServiceLocator.GetAllInstances(handlerInfo.MessageHandlerGenericType);
if (nh.HasValue)
{
//yeah, I know this is not thread safe but it's supposed to be a harmless sanity check
if (nh.Value != handlers.Count)
{
log.Warn("Number of handlers changed for type {0}. Was {1}, now is {2}", t.FullName, nh.Value, handlers.Count);
handlerInfo._numHandlersFound = handlers.Count;
}
}
else
{
handlerInfo._numHandlersFound = handlers.Count;
}
return(true);
}
protected MsgHandlerInfo GetOutHandlersFor(Type msgType)
{
MsgHandlerInfo mi;
if (_outHandlers.TryGetValue(msgType, out mi))
return mi;
lock (this)
{
if (_outHandlers.TryGetValue(msgType, out mi))
return mi;
mi = new MsgHandlerInfo();
mi.MessageType = msgType;
mi.MessageHandlerGenericType = typeof(IOutgoingMessageHandler<>).MakeGenericType(msgType);
mi.InitiatedByGenericType = typeof(IOutgoingMessageHandler<>).MakeGenericType(msgType);
mi.HandleMethod = DelegateFactory.CreateMessageHandlerDelegate(mi.MessageHandlerGenericType.GetMethod("OnMessageSend"));
_outHandlers[msgType] = mi;
return mi;
}
}
protected virtual bool GetOutgoingHandlersForMessageType(Type t, out ICollection<object> handlers, out MsgHandlerInfo handlerInfo)
{
handlers = null;
handlerInfo = GetOutHandlersFor(t);
if (handlerInfo == null) return false;
handlers = ServiceLocator.GetAllInstances(handlerInfo.MessageHandlerGenericType);
return true;
}
protected virtual bool GetAllHandlersForMessageType(Type t, out ICollection<object> handlers, out MsgHandlerInfo handlerInfo)
{
handlers = null;
handlerInfo = GetHandlersFor(t);
if (handlerInfo == null) return false;
var nh = handlerInfo._numHandlersFound;
handlers = ServiceLocator.GetAllInstances(handlerInfo.MessageHandlerGenericType);
if (nh.HasValue)
{
//yeah, I know this is not thread safe but it's supposed to be a harmless sanity check
if (nh.Value != handlers.Count)
{
log.Warn("Number of handlers changed for type {0}. Was {1}, now is {2}", t.FullName, nh.Value, handlers.Count);
handlerInfo._numHandlersFound = handlers.Count;
}
}
else handlerInfo._numHandlersFound = handlers.Count;
return true;
}
protected virtual bool CallHandler(object message, object handler, MsgHandlerInfo mhi, IMessageBus bus)
{
if (handler is SagaBase)
{
if (SagaHandler == null) throw new PermanentMessageProcessingException("Saga support has not been enabled");
string id = null;
if (bus != null && bus.CurrentMessageInfo != null)
{
id = bus.CurrentMessageInfo.CorrelationId;
}
bool isInitiator = mhi.InitiatedByGenericType.IsAssignableFrom(handler.GetType());
var b = SagaHandler.DispatchToSaga(id, message, isInitiator, false, (SagaBase)handler, delegate(SagaBase saga)
{
mhi.HandleMethod(saga, message);
});
if (b == Sagas.SagaStateHelper.SagaDispatchResult.ConcurrentUpdateHandleLater)
{
//bus.HandleCurrentMessageLater(DateTime.Now.AddSeconds(1));
//throw new Exception("Should not happen");
throw new RetryMessageProcessingException(DateTime.Now.AddSeconds(1), "saga locked");
}
return true;
}
else
{
mhi.HandleMethod(handler, message);
return true;
}
}
