protected override ManagementEventWatcher CreateEventWatcher()
{
return(WqlHelper.GetEventWatcher(WqlEventType.Operation,
WqlTableName.EthernetSwitchExtension,
string.Format("TargetInstance.{0} = '{1}'",
WqlColumnNames.ElementName, OvsExtentionName)));
}
protected override ManagementObjectCollection QueryItems()
{
return(WqlHelper.QueryAll(WqlTableName.EthernetSwitchExtension,
string.Format("{0} = '{1}' AND {2} = {3}",
WqlColumnNames.ElementName, OvsExtentionName,
WqlColumnNames.EnabledState, (int)EnabledState.Enabled),
new string[] { WqlColumnNames.SystemName }));
}
protected override ManagementObjectCollection QueryItems()
{
return(WqlHelper.QueryAll(WqlTableName.EthernetPortAllocationSettingData,
string.Format("{0} = '{1}' AND {2} = {3}", WqlColumnNames.Caption,
VirtualAdapterCaption, WqlColumnNames.EnabledState, (int)EnabledState.Enabled),
new string[] { WqlColumnNames.ElementName, WqlColumnNames.InstanceID,
WqlColumnNames.HostResource }));
}
private void EventWatcher_EventArrived(object sender, EventArrivedEventArgs e)
{
var changed = WqlHelper.ParseEventArrivedEventArgs(e);
T oldItem = default(T), newItem = default(T);
if (changed.Item1 != null)
{
oldItem = ConvertItem(changed.Item1);
}
if (changed.Item2 != null)
{
newItem = ConvertItem(changed.Item2);
}
if (IsSameItem(oldItem, newItem))
{
//Nothing relevant is changed.
return;
}
var args = new WmiMonitorEventArgs <T>();
bool updateResult;
args.NewEvent = e.NewEvent;
args.OldValue = oldItem;
args.NewValue = newItem;
cacheLock.EnterWriteLock();
if (IsSameItem(oldItem, null) && !IsSameItem(newItem, null))
{
args.Operation = ItemOperation.Remove;
updateResult = AddOrDeleteItem(changed.Item1, false);
}
else if (!IsSameItem(oldItem, null) && IsSameItem(newItem, null))
{
args.Operation = ItemOperation.Add;
updateResult = AddOrDeleteItem(changed.Item2, true);
}
else
{
args.Operation = ItemOperation.Modify;
updateResult = AddOrDeleteItem(changed.Item1, false) && AddOrDeleteItem(changed.Item2, true);
}
cacheLock.ExitWriteLock();
if (updateResult)
{
cacheLock.EnterReadLock();
ItemUpdated?.Invoke(this, args);
cacheLock.ExitReadLock();
}
}
protected override ManagementEventWatcher CreateEventWatcher()
{
return(WqlHelper.GetEventWatcher(
WqlEventType.Operation, WqlTableName.EthernetPortAllocationSettingData,
string.Format("TargetInstance.{0} = '{1}'", WqlColumnNames.Caption, VirtualAdapterCaption)));
}