public async Task <VisualObject> ReadAsync(CancellationToken cancellationToken)
{
VisualObject visualObject = null;
IReliableStateManager stateManager = ReliableCollectionsExtensions.GetReliableStateManager();
if (stateManager == null)
{
Console.WriteLine($"Failed to get StateManager");
return(VisualObject.CreateRandom(Guid.NewGuid().ToString()));
}
using (var txn = stateManager.CreateTransaction())
{
var visualObjectStore = await stateManager.GetOrAddAsync <IReliableDictionary <string, VisualObject> >(VISUAL_OBJECT_STORE);
var enumerable = await visualObjectStore.CreateEnumerableAsync(txn);
var enumerator = enumerable.GetAsyncEnumerator();
while (await enumerator.MoveNextAsync(cancellationToken))
{
visualObject = enumerator.Current.Value;
}
if (visualObject == null)
{
Console.WriteLine($"Visual object does not exist. Creating new object.");
visualObject = VisualObject.CreateRandom(Guid.NewGuid().ToString());
await visualObjectStore.AddAsync(txn, visualObject.Name, visualObject);
}
await txn.CommitAsync();
}
return(visualObject);
}
public async Task <VisualObject> ReadAsync(CancellationToken cancellationToken)
{
if (!File.Exists(this.stateFilePath))
{
Console.WriteLine($"State file {this.stateFilePath} does not exist. Creating new object.");
var obj = VisualObject.CreateRandom(Guid.NewGuid().ToString());
await WriteAsync(obj, cancellationToken);
}
// file exists read it
byte[] data = null;
using (var stream = new FileStream(
this.stateFilePath,
FileMode.Open,
FileAccess.Read,
FileShare.None,
4096,
true))
{
data = new byte[stream.Length];
await stream.ReadAsync(data, 0, data.Length, cancellationToken);
}
// deserialize
try
{
return(this.Deserialize(data));
}
catch (Exception e)
{
Console.WriteLine($"Read error. recreating the object. {e.ToString()}");
return(VisualObject.CreateRandom(Guid.NewGuid().ToString()));
}
}
protected override async Task OnActivateAsync()
{
VisualObject newObject = VisualObject.CreateRandom(this.Id.ToString());
ActorEventSource.Current.ActorMessage(this, "StateCheck {0}", (await this.StateManager.ContainsStateAsync(StatePropertyName)).ToString());
VisualObject result = await this.StateManager.GetOrAddStateAsync <VisualObject>(StatePropertyName, newObject);
this.jsonString = result.ToJson();
// ACTOR MOVEMENT REFRESH
this.updateTimer = this.RegisterTimer(this.MoveObject, null, TimeSpan.FromMilliseconds(10), TimeSpan.FromMilliseconds(10));
return;
}