public static async Task <Grain> New(Type concreteType, AbstractKey key, IGrainRuntime grainRuntime, IServiceProvider services, StorageCell storage, FakeSerializer serializer)
{
var creator = new GrainCreator(grainRuntime, services);
var stateType = GetStateType(concreteType);
var grain = stateType != null
? creator.CreateGrainInstance(concreteType, key, stateType, new DummyStorageProvider()) //IStorage will be hackily assigned below // new StorageProviderAdaptor(key, store))
: creator.CreateGrainInstance(concreteType, key);
if (stateType != null)
{
var fnStateExtractor = _dStateExtractors.GetOrAdd(concreteType, t => BuildStateExtractor(t));
var fnStorageAssign = _dStorageAssigners.GetOrAdd(concreteType, t => BuildStorageAssigner(t));
var grainState = fnStateExtractor(grain);
var bridge = new GrainStorageBridge(storage, serializer, grainState);
fnStorageAssign(grain, bridge);
await bridge.ReadStateAsync();
}
return(grain);
}
private static T CreateGrain <T>(IGrainIdentity identity) where T : Grain
{
Grain grain;
//Check to see if the grain is stateful
if (IsSubclassOfRawGeneric(typeof(Grain <>), typeof(T)))
{
var grainGenericArgs = typeof(T).BaseType?.GenericTypeArguments;
if (grainGenericArgs == null || grainGenericArgs.Length == 0)
{
throw new Exception($"Unable to get grain state type info for {typeof(T)}");
}
//Get the state type
var stateType = grainGenericArgs[0];
//Create a new stateful grain
grain = GrainCreator.CreateGrainInstance(typeof(T), identity, stateType, StorageProvider);
}
else
{
//Create a stateless grain
grain = GrainCreator.CreateGrainInstance(typeof(T), identity) as T;
}
if (grain == null)
{
return(null);
}
//Emulate the grain's lifecycle
grain.OnActivateAsync();
return(grain as T);
}