private void ProcessQueue(IWorkContext context, Queue <int> queue, IDictionary <int, TaskReference> taskReferences)
{
context = context.WithTag(_tag);
while (queue.Count > 0 && taskReferences.Count < MaxParallel)
{
int nodeId = queue.Dequeue();
WorkflowVertex vertex = Vertices[nodeId];
context.EventLog.Verbose(context, $"Starting state manager for nodeId={nodeId}");
var manager = new StateManagerBuilder()
.Add(vertex.StateItems)
.Build();
vertex.State = WorkflowState.Running;
Task t = Task.Run(() => manager.RunAsync(context));
taskReferences.Add(nodeId, new TaskReference(t, nodeId));
}
if (taskReferences.Count > 0)
{
Task[] waitTasks = taskReferences.Values.Select(x => x.Task).ToArray();
int index = Task.WaitAny(waitTasks, context.CancellationToken);
waitTasks[index].Wait();
}
taskReferences.Values
.Where(x => x.Task.IsCompleted)
.Do(x => Vertices[x.NodeId].State = WorkflowState.Completed)
.ToList()
.Do(x => context.EventLog.Verbose(context, $"NodeId={x.NodeId} state manager has been completed"))
.Run(x => taskReferences.Remove(x.NodeId));
}
public StateManager(StateManagerBuilder builder)
{
Verify.IsNotNull(nameof(builder), builder);
StateItems = new List <IStateItem>(builder.StateItems);
Notify = builder.Notify;
}