/// <summary>Constructs a reference to the grain with the specified Id.</summary>
/// <param name="grainId">The Id of the grain to refer to.</param>
/// <param name="genericArgument">Type arguments in case of a generic grain.</param>
/// <param name="runtime">The runtime which this grain reference is bound to.</param>
private GrainReference(GrainId grainId, string genericArgument, IGrainReferenceRuntime runtime)
{
GrainId = grainId;
this.genericArguments = genericArgument;
this.runtime = runtime;
if (string.IsNullOrEmpty(genericArgument))
{
genericArguments = null; // always keep it null instead of empty.
}
// SystemTarget checks
var isSystemTarget = grainId.IsSystemTarget();
if (SystemTargetGrainId.TryParse(grainId, out var systemTargetId))
{
this.SystemTargetSilo = systemTargetId.GetSiloAddress();
if (SystemTargetSilo == null)
{
throw new ArgumentNullException("systemTargetSilo", String.Format("Trying to create a GrainReference for SystemTarget grain id {0}, but passing null systemTargetSilo.", grainId));
}
if (genericArguments != null)
{
throw new ArgumentException(String.Format("Trying to create a GrainReference for SystemTarget grain id {0}, and also passing non-null genericArguments {1}.", grainId, genericArguments), "genericArgument");
}
}
// ObserverId checks
var isClient = grainId.IsClient();
if (isClient)
{
// Note: we can probably just remove this check - it serves little purpose.
if (!ObserverGrainId.TryParse(grainId, out _))
{
throw new ArgumentNullException("observerId", String.Format("Trying to create a GrainReference for Observer with Client grain id {0}, but passing null observerId.", grainId));
}
if (genericArguments != null)
{
throw new ArgumentException(String.Format("Trying to create a GrainReference for Client grain id {0}, and also passing non-null genericArguments {1}.", grainId, genericArguments), "genericArgument");
}
}
}
public void SendRequest(
GrainReference target,
InvokeMethodRequest request,
TaskCompletionSource <object> context,
InvokeMethodOptions options)
{
var message = this.messageFactory.CreateMessage(request, options);
message.InterfaceType = target.InterfaceType;
message.InterfaceVersion = target.InterfaceVersion;
// fill in sender
if (message.SendingSilo == null)
{
message.SendingSilo = MySilo;
}
IGrainContext sendingActivation = RuntimeContext.CurrentGrainContext;
if (sendingActivation == null)
{
var clientAddress = this.HostedClient.Address;
message.SendingGrain = clientAddress.Grain;
message.SendingActivation = clientAddress.Activation;
}
else
{
message.SendingActivation = sendingActivation.ActivationId;
message.SendingGrain = sendingActivation.GrainId;
}
// fill in destination
var targetGrainId = target.GrainId;
message.TargetGrain = targetGrainId;
SharedCallbackData sharedData;
if (SystemTargetGrainId.TryParse(targetGrainId, out var systemTargetGrainId))
{
message.TargetSilo = systemTargetGrainId.GetSiloAddress();
message.TargetActivation = ActivationId.GetDeterministic(targetGrainId);
message.Category = targetGrainId.Type.Equals(Constants.MembershipOracleType) ?
Message.Categories.Ping : Message.Categories.System;
sharedData = this.systemSharedCallbackData;
}
else
{
sharedData = this.sharedCallbackData;
}
var oneWay = (options & InvokeMethodOptions.OneWay) != 0;
if (context is null && !oneWay)
{
this.logger.Warn(ErrorCode.IGC_SendRequest_NullContext, "Null context {0}: {1}", message, Utils.GetStackTrace());
}
if (message.IsExpirableMessage(this.messagingOptions.DropExpiredMessages))
{
message.TimeToLive = sharedData.ResponseTimeout;
}
if (!oneWay)
{
var callbackData = new CallbackData(sharedData, context, message);
callbacks.TryAdd(message.Id, callbackData);
}
this.messagingTrace.OnSendRequest(message);
this.Dispatcher.SendMessage(message, sendingActivation);
}