void q_QueueItemAvailable(object sender, QueueEventArgs e)
{
ActivityExecutionContext aec = sender as ActivityExecutionContext;
if (aec != null)
{
WorkflowQueuingService qs = aec.GetService<WorkflowQueuingService>();
WorkflowQueue q = qs.GetWorkflowQueue(e.QueueName);
//get the outparameters from the workflow
object o = q.Dequeue();
//delete the queue
qs.DeleteWorkflowQueue(e.QueueName);
Dictionary<string,object> outparams = o as Dictionary<string,object>;
if(outparams!=null)
{
foreach (KeyValuePair<string, object> item in outparams)
{
if (this.Parameters.Contains(item.Key))
{
//modify the value
this.Parameters[item.Key].SetValue(WorkflowParameterBinding.ValueProperty, item.Value);
}
}
}
aec.CloseActivity();
}
}
private void HandleExternalEvent(Object sender, QueueEventArgs args)
{
ThreadMonitor.WriteToConsole(Thread.CurrentThread, "WaitForMessageActivity", "WaitForMessageActivity: Processed External Event");
object data = this.workflowQueue.Dequeue();
ActivityExecutionContext context = sender as ActivityExecutionContext;
context.CloseActivity();
}
private void NotifySynchronousSubscribers(IComparable queueName, EventQueueState qState, Object eventInstance)
{
QueueEventArgs args = new QueueEventArgs(queueName);
for (int i = 0; i < qState.SynchronousListeners.Count; ++i)
{
if (qState.SynchronousListeners[i].HandlerDelegate != null)
qState.SynchronousListeners[i].HandlerDelegate(new WorkflowQueue(this, queueName), args);
else
qState.SynchronousListeners[i].EventListener.OnEvent(new WorkflowQueue(this, queueName), args);
}
}
internal void NotifyAsynchronousSubscribers(IComparable queueName, EventQueueState qState, int numberOfNotification)
{
for (int i = 0; i < numberOfNotification; ++i)
{
QueueEventArgs args = new QueueEventArgs(queueName);
lock (SyncRoot)
{
foreach (ActivityExecutorDelegateInfo<QueueEventArgs> subscriber in qState.AsynchronousListeners)
{
Activity contextActivity = rootWorkflowExecutor.GetContextActivityForId(subscriber.ContextId);
Debug.Assert(contextActivity != null);
subscriber.InvokeDelegate(contextActivity, args, false);
WorkflowTrace.Runtime.TraceInformation("Queuing Service: Notifying async subscriber on queue:'{0}' activity:{1}", queueName.ToString(), subscriber.ActivityQualifiedName);
}
}
}
}
internal void NotifyAsynchronousSubscribers(IComparable queueName, EventQueueState qState, int numberOfNotification)
{
for (int i = 0; i < numberOfNotification; i++)
{
QueueEventArgs e = new QueueEventArgs(queueName);
lock (this.SyncRoot)
{
foreach (ActivityExecutorDelegateInfo<QueueEventArgs> info in qState.AsynchronousListeners)
{
Activity contextActivityForId = this.rootWorkflowExecutor.GetContextActivityForId(info.ContextId);
info.InvokeDelegate(contextActivityForId, e, false);
WorkflowTrace.Runtime.TraceInformation("Queuing Service: Notifying async subscriber on queue:'{0}' activity:{1}", new object[] { queueName.ToString(), info.ActivityQualifiedName });
}
}
}
}
public void OnQueueItemAvailable (Object sender, QueueEventArgs args)
{
Console.WriteLine ("OnQueueItemAvailable!");
//ThreadMonitor.WriteToConsole (Thread.CurrentThread, "WaitForMessageActivity",
// "WaitForMessageActivity: Processed External Event");
object data = this.workflowQueue.Peek ();
Console.WriteLine ("OnQueueItemAvailable event! {0}", data);
ActivityExecutionContext context = sender as ActivityExecutionContext;
//context.CloseActivity ();
}
public void OnQueueItemArrived (Object sender, QueueEventArgs args)
{
object data = this.workflowQueue.Peek ();
Console.WriteLine ("OnQueueItemArrived! event {0}", data);
}
// Handler when a queue item is available
private void OnQueueItemAvailable(object sender, QueueEventArgs args)
{
ActivityExecutionContext context = sender as ActivityExecutionContext;
WorkflowQueuingService qService = context.GetService<WorkflowQueuingService>() as WorkflowQueuingService;
IComparable qName = this.Queue;
// Dequeue the item and remove the handler
if (TryDequeueAndComplete(context, qName))
{
qService.GetWorkflowQueue(qName).QueueItemAvailable -= this.OnQueueItemAvailable;
}
}
