public void SubscribeToQueue(string queueName)
{
Queue queue;
if (!this.Server.Queues.TryGetValue(queueName, out queue))
{
return;
}
this.subscriptionDataLock.EnterWriteLock();
if (this.RootContext == null || !this.RootContext.AddQueue(queue))
{
QueueGroupContext group = new QueueGroupContext(queue);
group.Next = this.RootContext;
this.RootContext = group;
}
this.subscriptionDataLock.ExitWriteLock();
queue.AddSubscriber(this.LogicalConnection);//TODO. Check locks.
this.Server.MeasurementMgr.IncrementCumulativeValue(Analytics.MeasurementMgr.Metrics.BroadcastSubscriptionCount);
this.Server.MeasurementMgr.IncrementDistributionValue(Analytics.MeasurementMgr.Metrics.BroadcastSubscriptionCountPerQueue, queue.Id);
}
public void UnsubscribeFromAll()
{
this.subscriptionDataLock.EnterWriteLock();
this.RootContext = null;
this.subscriptionDataLock.ExitWriteLock();
}
public void CheckAndProcessPendingBroadcast(bool somethingHappened)
{
if (somethingHappened)
{
this.skipCheckNextMessage = false;
}
if (Interlocked.CompareExchange(ref broadcastRunFlag, 1, 0) == 1)
{
return;
}
if (this.skipCheckNextMessage)
{
return;
}
if (this.isWriteInProgress)
{
return;
}
this.subscriptionDataLock.EnterReadLock();
QueueGroupContext context = this.RootContext;
while (context != null)
{
if (!this.CanPushBroadcast)
{
break;
}
Queue originQueue;
object message = context.GetNextMessage(out originQueue);
if (message != null)
{
Buffer bytes;
this.Server.Serializer.Serialize(message, out bytes);
this.SendSerializedMessage(bytes);
this.Server.MeasurementMgr.IncrementDistributionValue(Analytics.MeasurementMgr.Metrics.BroadcastSentMessageVolPerQueue, originQueue.Id, 1);
this.Server.MeasurementMgr.IncrementAvgDistributionValue(Analytics.MeasurementMgr.Metrics.BroadcastAvgMessageSizePerQueue, originQueue.Id, bytes.Size);
this.Server.MeasurementMgr.IncrementKeyedAveragedValue(Analytics.MeasurementMgr.Metrics.BroadcastSentMessagePerConnection, this.InternalId, 1);
}
else
{
context = context.Next;
}
}
broadcastRunFlag = 0;
this.subscriptionDataLock.ExitReadLock();
}
public void RemoveQueue(string queueName)
{
QueueContext context = this.Head;
QueueContext previous = null;
while (context != null)
{
if (context.Queue.Name == queueName)
{
break;
}
previous = context;
context = context.Next;
}
if (context != null)
{
if (previous != null)
{
previous.Next = context.Next;
}
else
{
this.Head = context.Next;
}
//
context.Next = null;
if (this.Current == context)
{
this.Current = this.Head;
}
}
else
{
if (this.Next != null)
{
this.Next.RemoveQueue(queueName);
QueueGroupContext nextGroup = this.Next;
if (nextGroup.Head == null)
{
this.Next = nextGroup.Next;
nextGroup.Next = null;
}
}
}
//
}
public void UnsubscribeFromQueue(string queueName)
{
this.subscriptionDataLock.EnterWriteLock();
if (this.RootContext != null)
{
this.RootContext.RemoveQueue(queueName);
QueueGroupContext nextGroup = this.RootContext;
if (nextGroup.Head == null)
{
this.RootContext = nextGroup.Next;
nextGroup.Next = null;
}
}
this.subscriptionDataLock.ExitWriteLock();
}
public bool AddQueue(Queue queue)
{
if (this.Head.Queue.QueueOptions.Priority < queue.QueueOptions.Priority)
{
return(false);
}
if (this.Head.Queue.QueueOptions.Priority == queue.QueueOptions.Priority)
{
this.AddQueueIntern(queue);
return(true);
}
// queue has a lower priority:
if (this.Next == null || !this.Next.AddQueue(queue))
{
QueueGroupContext group = new QueueGroupContext(queue);
group.Next = this.Next;
this.Next = group;
}
return(true);
}