private async ValueTask <PlacementResult> GetOrPlaceActivationAsync(
PlacementTarget target,
PlacementStrategy strategy,
IPlacementRuntime placementRuntime,
IActivationSelector selector,
IPlacementDirector director)
{
var placementResult = await selector.OnSelectActivation(strategy, target.GrainIdentity, placementRuntime);
if (placementResult is object)
{
return(placementResult);
}
var siloAddress = await director.OnAddActivation(strategy, target, placementRuntime);
ActivationId activationId;
if (strategy.IsDeterministicActivationId)
{
// Use the grain id as the activation id.
activationId = ActivationId.GetDeterministic(target.GrainIdentity);
}
else
{
activationId = ActivationId.NewId();
}
return(PlacementResult.SpecifyCreation(
siloAddress,
activationId,
strategy));
}
public PlacementDirectorsManager(
IServiceProvider services,
PlacementStrategy defaultPlacementStrategy,
ClientObserversPlacementDirector clientObserversPlacementDirector)
{
this.serviceProvider = services;
this.defaultPlacementStrategy = defaultPlacementStrategy;
this.clientObserversPlacementDirector = clientObserversPlacementDirector;
this.ResolveBuiltInStrategies();
// TODO: Make default selector configurable
this.defaultActivationSelector = ResolveSelector(RandomPlacement.Singleton, true);
}
private async ValueTask <PlacementResult> GetOrPlaceActivationAsync(
PlacementTarget target,
PlacementStrategy strategy,
IPlacementRuntime placementRuntime,
IActivationSelector selector,
IPlacementDirector director)
{
var placementResult = await selector.OnSelectActivation(strategy, target.GrainIdentity, placementRuntime);
if (placementResult is object)
{
return(placementResult);
}
var siloAddress = await director.OnAddActivation(strategy, target, placementRuntime);
string grainTypeName;
if (LegacyGrainId.TryConvertFromGrainId(target.GrainIdentity, out var legacyId))
{
grainTypeName = placementRuntime.GetGrainTypeName(legacyId.TypeCode);
}
else
{
grainTypeName = null;
}
ActivationId activationId;
if (strategy.IsDeterministicActivationId)
{
// Use the grain id as the activation id.
activationId = ActivationId.GetDeterministic(target.GrainIdentity);
}
else
{
activationId = ActivationId.NewId();
}
return(PlacementResult.SpecifyCreation(
siloAddress,
activationId,
strategy,
grainTypeName));
}