/// <summary>
/// This method uses an IReliableQueue to store completed RestockRequests which are later sent to the client using batch processing.
/// We could send the request immediately but we prefer to minimize traffic back to the Inventory Service by batching multiple requests
/// in one trip.
/// </summary>
/// <param name="actorId"></param>
/// <param name="request"></param>
public async void RestockRequestCompleted(ActorId actorId, RestockRequest request)
{
IReliableQueue <RestockRequest> completedRequests = await this.StateManager.GetOrAddAsync <IReliableQueue <RestockRequest> >(CompletedRequestsQueueName);
using (ITransaction tx = this.StateManager.CreateTransaction())
{
await completedRequests.EnqueueAsync(tx, request);
await tx.CommitAsync();
}
IRestockRequestActor restockRequestActor = ActorProxy.Create <IRestockRequestActor>(actorId, this.ApplicationName);
await restockRequestActor.UnsubscribeAsync <IRestockRequestEvents>(this); //QUESTION:What does this method do?
}
/// <summary>
/// This method activates an actor to fulfill the RestockRequest.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public async Task AddRestockRequestAsync(RestockRequest request)
{
try
{
//Get dictionary of Restock Requests
IReliableDictionary <InventoryItemId, ActorId> requestDictionary =
await this.StateManager.GetOrAddAsync <IReliableDictionary <InventoryItemId, ActorId> >(ItemIdToActorIdMapName);
ActorId actorId = ActorId.CreateRandom();
try
{
using (ITransaction tx = this.StateManager.CreateTransaction())
{
await requestDictionary.AddAsync(tx, request.ItemId, actorId);
await tx.CommitAsync();
}
}
catch (ArgumentException)
{
// restock request already exists
return;
}
// Create actor proxy and send the request
IRestockRequestActor restockRequestActor = ActorProxy.Create <IRestockRequestActor>(actorId, this.ApplicationName);
await restockRequestActor.AddRestockRequestAsync(request);
// Successfully added, register for event notifications for completion
await restockRequestActor.SubscribeAsync <IRestockRequestEvents>(this);
ServiceEventSource.Current.ServiceMessage(this, "Created restock request. Item ID: {0}. Actor ID: {1}", request.ItemId, actorId);
}
catch (InvalidOperationException ex)
{
ServiceEventSource.Current.Message(string.Format("RestockRequestManagerService: Actor rejected {0}: {1}", request, ex));
throw;
}
catch (Exception ex)
{
ServiceEventSource.Current.Message(string.Format("RestockRequestManagerService: Exception {0}: {1}", request, ex));
throw;
}
}
