/// <summary>
/// Initializes the object with the containing subscription object.
/// </summary>
public ComAeEventSink(ComAeSubscriptionClient subscription)
{
// save group.
m_subscription = subscription;
// create connection point.
m_connectionPoint = new ConnectionPoint(subscription.Unknown, typeof(IOPCEventSink).GUID);
// advise.
m_connectionPoint.Advise(this);
}
/// <summary>
/// Initializes the object with the containing subscription object.
/// </summary>
public ComAeEventSink(ComAeSubscriptionClient subscription)
{
// save group.
m_subscription = subscription;
// create connection point.
m_connectionPoint = new ConnectionPoint(subscription.Unknown, typeof(IOPCEventSink).GUID);
// advise.
m_connectionPoint.Advise(this);
}
/// <summary>
/// Tells the node manager to refresh any conditions associated with the specified monitored items.
/// </summary>
public override ServiceResult ConditionRefresh(
OperationContext context,
IList <IEventMonitoredItem> monitoredItems)
{
List <MonitoredItem> itemsToRefresh = new List <MonitoredItem>();
List <ComAeSubscriptionClient> subscriptionsToRefresh = new List <ComAeSubscriptionClient>();
lock (Lock)
{
// build list of subscriptions that have to be refreshed.
for (int ii = 0; ii < monitoredItems.Count; ii++)
{
MonitoredItem monitoredItem = monitoredItems[ii] as MonitoredItem;
if (monitoredItem == null)
{
continue;
}
ComAeSubscriptionClient subscription = null;
if (!m_monitoredItems.TryGetValue(monitoredItem.Id, out subscription))
{
continue;
}
itemsToRefresh.Add(monitoredItem);
subscriptionsToRefresh.Add(subscription);
}
}
for (int ii = 0; ii < subscriptionsToRefresh.Count; ii++)
{
// collect the events.
List <IFilterTarget> events = new List <IFilterTarget>();
subscriptionsToRefresh[ii].Refresh(events);
// queue the events.
for (int jj = 0; jj < events.Count; jj++)
{
itemsToRefresh[ii].QueueEvent(events[jj]);
}
}
return(ServiceResult.Good);
}
/// <summary>
/// Subscribes to events.
/// </summary>
protected override ServiceResult SubscribeToEvents(
ServerSystemContext context,
NodeState source,
IEventMonitoredItem monitoredItem,
bool unsubscribe)
{
ComAeClientManager system = (ComAeClientManager)this.SystemContext.SystemHandle;
ComAeClient client = (ComAeClient)system.SelectClient(context, false);
// need to wait until the cache is refreshed for the first time.
if (!WaitForTypeCache())
{
return(StatusCodes.BadOutOfService);
}
lock (Lock)
{
SubscriptionIndex index = new SubscriptionIndex();
index.NodeId = source.NodeId;
index.LocaleId = client.LocaleId;
if (unsubscribe)
{
ComAeSubscriptionClient subscription = null;
if (!m_monitoredItems.TryGetValue(monitoredItem.Id, out subscription))
{
return(ServiceResult.Good);
}
m_monitoredItems.Remove(monitoredItem.Id);
// Utils.Trace("REMOVED ITEM {0}", monitoredItem.Id);
if (subscription.RemoveItem(monitoredItem as MonitoredItem) == 0)
{
subscription.Delete();
m_subscriptions.Remove(index);
// Utils.Trace("DELETED SUBSCRIPTION {0}", index.NodeId);
}
}
else
{
ComAeSubscriptionClient subscription = null;
if (!m_subscriptions.TryGetValue(index, out subscription))
{
subscription = new ComAeSubscriptionClient(context, m_configuration, m_typeCache, NamespaceIndex, system, monitoredItem as MonitoredItem);
m_subscriptions.Add(index, subscription);
subscription.Create();
// Utils.Trace("ADDED NEW SUBSCRIPTION {0}", index.NodeId);
}
else
{
subscription.AddItem(monitoredItem as MonitoredItem);
}
m_monitoredItems[monitoredItem.Id] = subscription;
// Utils.Trace("ADDED NEW ITEM {0}", monitoredItem.Id);
}
}
// all done.
return(ServiceResult.Good);
}
/// <summary>
/// Subscribes to events.
/// </summary>
protected override ServiceResult SubscribeToEvents(
ServerSystemContext context,
NodeState source,
IEventMonitoredItem monitoredItem,
bool unsubscribe)
{
ComAeClientManager system = (ComAeClientManager)this.SystemContext.SystemHandle;
ComAeClient client = (ComAeClient)system.SelectClient(context, false);
// need to wait until the cache is refreshed for the first time.
if (!WaitForTypeCache())
{
return StatusCodes.BadOutOfService;
}
lock (Lock)
{
SubscriptionIndex index = new SubscriptionIndex();
index.NodeId = source.NodeId;
index.LocaleId = client.LocaleId;
if (unsubscribe)
{
ComAeSubscriptionClient subscription = null;
if (!m_monitoredItems.TryGetValue(monitoredItem.Id, out subscription))
{
return ServiceResult.Good;
}
m_monitoredItems.Remove(monitoredItem.Id);
// Utils.Trace("REMOVED ITEM {0}", monitoredItem.Id);
if (subscription.RemoveItem(monitoredItem as MonitoredItem) == 0)
{
subscription.Delete();
m_subscriptions.Remove(index);
// Utils.Trace("DELETED SUBSCRIPTION {0}", index.NodeId);
}
}
else
{
ComAeSubscriptionClient subscription = null;
if (!m_subscriptions.TryGetValue(index, out subscription))
{
subscription = new ComAeSubscriptionClient(context, m_configuration, m_typeCache, NamespaceIndex, system, monitoredItem as MonitoredItem);
m_subscriptions.Add(index, subscription);
subscription.Create();
// Utils.Trace("ADDED NEW SUBSCRIPTION {0}", index.NodeId);
}
else
{
subscription.AddItem(monitoredItem as MonitoredItem);
}
m_monitoredItems[monitoredItem.Id] = subscription;
// Utils.Trace("ADDED NEW ITEM {0}", monitoredItem.Id);
}
}
// all done.
return ServiceResult.Good;
}