public ISagaConfigurator <TS, TD> AddSaga <TS, TD>()
where TD : SagaState
where TS : Saga <TD>
{
var hasMessages = _sagaTypeResolver.Register <TS, TD>();
if (hasMessages)
{
Services.AddTransient <TD>(_ => default) // this will allow DI container validation at startup
public ISagaConfigurator <TS, TD> AddSaga <TS, TD>()
where TS : Saga <TD> where TD : SagaState
{
var sagaType = typeof(TS);
var sagaStateType = typeof(TD);
_services.AddScoped <TS>();
var messageHandlerType = typeof(IHandleMessage <>).GetGenericTypeDefinition();
var interfaces = sagaType.GetInterfaces();
foreach (var i in interfaces)
{
if (!i.IsGenericType)
{
continue;
}
var openGeneric = i.GetGenericTypeDefinition();
if (!openGeneric.IsAssignableFrom(messageHandlerType))
{
continue;
}
var messageType = i.GetGenericArguments().First();
//TODO: move this check into SagaTypeResolver
if (messageType.IsAssignableTo(typeof(ICommand)))
{
var commandHandlerType = typeof(IHandleMessage <>).MakeGenericType(messageType);
if (_services.Any(sd => sd.ServiceType == commandHandlerType))
{
throw new TypeLoadException(
$"there is already one handler registered for command type '{messageType.FullName}'");
}
}
_typeResolver.Register(messageType, (sagaType, sagaStateType));
_services.AddTransient(i, sagaType);
}
_services.AddSingleton(typeof(ISagaStateService <,>).MakeGenericType(sagaType, sagaStateType),
typeof(SagaStateService <,>).MakeGenericType(sagaType, sagaStateType));
_services.AddSingleton(typeof(ISagaRunner <,>).MakeGenericType(sagaType, sagaStateType),
typeof(SagaRunner <,>).MakeGenericType(sagaType, sagaStateType));
_services.AddSingleton(typeof(ISagaFactory <,>).MakeGenericType(sagaType, sagaStateType),
typeof(DefaultSagaFactory <,>).MakeGenericType(sagaType, sagaStateType));
return(new SagaConfigurator <TS, TD>(_services));
}
public ISagaConfigurator <TS, TD> AddSaga <TS, TD>()
where TD : SagaState
where TS : Saga <TD>
{
var hasMessages = _typeResolver.Register <TS, TD>();
if (hasMessages)
{
Services.AddTransient <TS>()
.AddTransient <ISagaFactory <TS, TD>, DefaultSagaFactory <TS, TD> >()
.AddTransient <ISagaStateService <TS, TD>, SagaStateService <TS, TD> >()
.AddTransient <ISagaRunner <TS, TD>, SagaRunner <TS, TD> >()
.AddTransient <ISagaStateFactory <TD>, DefaultSagaStateFactory <TD> >();
}
return(new SagaConfigurator <TS, TD>(Services));
}
