private void NodeEventHandler(NodeEvent e)
{
switch (e.Type)
{
case NodeEventType.DeviceUpdate:
if (e.Device != null && e.Device.Guid != Guid.Empty)
DeviceUpdatedHandler(e.Device);
break;
case NodeEventType.DeviceDeregister:
if (e.Guid != Guid.Empty)
DeviceDeregisteredHandler(e.Guid);
break;
case NodeEventType.Data:
if (e.Data != null)
DataReceivedHandler(e.Data);
break;
}
}
private static void Notify(Guid device, NodeEvent e)
{
NodeSession session = Get(DeviceLookup(device));
if (session != null)
session.NodeEventEnqueue(e);
}
/// <summary>
/// Dequeue events
/// </summary>
/// <returns></returns>
public NodeEvent[] NodeEventDequeue(int timeout)
{
if (queue.Count <= 0 && timeout > 0)
if (!queue_wait.WaitOne(timeout, true))
return new NodeEvent[0];
queue_mutex.WaitOne();
if (queue.Count <= 0)
{
queue_mutex.ReleaseMutex();
return new NodeEvent[0];
}
NodeEvent[] e = new NodeEvent[queue.Count];
for (int i = 0; i < e.Length; i++)
e[i] = queue.Dequeue();
queue_mutex.ReleaseMutex();
return e;
}
/// <summary>
/// Push an event into the queue
/// </summary>
/// <param name="e"></param>
public void NodeEventEnqueue(NodeEvent e)
{
if (e == null) throw new ArgumentNullException();
queue_mutex.WaitOne();
int max = Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["Reactivity.Server.Nodes.NodeSession.NodeEventQueueLength"]);
while (queue.Count >= max)
queue.Dequeue();
queue.Enqueue(e);
queue_mutex.ReleaseMutex();
queue_wait.Set();
}
public static void Notify(NodeEvent e)
{
switch (e.Type)
{
case NodeEventType.Data:
if (e.Data != null && e.Data.Device != Guid.Empty)
Notify(e.Data.Device, e);
break;
case NodeEventType.DeviceUpdate:
if (e.Device != null && e.Device.Guid != Guid.Empty)
Notify(e.Device.Guid, e);
break;
case NodeEventType.DeviceDeregister:
//must be coming from DeviceManager when device get deleted
if (e.Guid != Guid.Empty)
{
devices_mutex.WaitOne();
if (!devices_sessions.ContainsKey(e.Guid))
{
devices_mutex.ReleaseMutex();
break;
}
NodeSession session = Get(devices_sessions[e.Guid]);
devices_sessions.Remove(e.Guid);
devices_mutex.ReleaseMutex();
if (session != null)
session.NodeEventEnqueue(e);
}
break;
}
}
