/// <summary>
/// Вспомогательный метод для инициализации списка тегов с сервера.
/// Вызывается при соединении с сервером
/// </summary>
/// <param name="itemName"></param>
void InitTagList(string itemName = "")
{
var itemIdentifier = new Opc.ItemIdentifier();
itemIdentifier.ItemName = itemName;
var browseFilters = new Opc.Da.BrowseFilters();
browseFilters.BrowseFilter = browseFilter.all;
var browsePosition = new Opc.Da.BrowsePosition(itemIdentifier, browseFilters);
BrowseElement[] browseElements = serverHandle.Browse(itemIdentifier, browseFilters, out browsePosition);
if (browseElements != null)
{
foreach (BrowseElement element in browseElements)
{
if (element.IsItem)
{
var item = new Opc.Da.Item
{
ItemName = element.ItemName
};
tagList.Add(item);
}
else
{
InitTagList(element.ItemName);
}
}
}
}
// Token: 0x060007FD RID: 2045 RVA: 0x00012D64 File Offset: 0x00011D64
public virtual object Clone()
{
BrowseFilters browseFilters = (BrowseFilters)base.MemberwiseClone();
browseFilters.PropertyIDs = (PropertyID[])((this.PropertyIDs != null) ? this.PropertyIDs.Clone() : null);
return(browseFilters);
}
/// <summary>
/// Метод для поиска всех тегов на ОРС сервере
/// </summary>
/// <param name="itemName"></param>
public void Browse(string itemName = "")
{
var itemIdentifier = new Opc.ItemIdentifier();
itemIdentifier.ItemName = itemName;
var browseFilters = new Opc.Da.BrowseFilters();
browseFilters.BrowseFilter = browseFilter.all;
var browsePosition = new Opc.Da.BrowsePosition(itemIdentifier, browseFilters);
BrowseElement[] browseElements = serverHandle.Browse(itemIdentifier, browseFilters, out browsePosition);
if (browseElements != null)
{
foreach (BrowseElement element in browseElements)
{
if (element.IsItem)
{
Console.WriteLine("Item name : {0}", element.ItemName);
}
else
{
Console.WriteLine();
Console.WriteLine("Group name : {0}", element.ItemName);
Browse(element.ItemName);
}
}
}
}
/// <summary>
/// Creates a deep copy of the object.
/// </summary>
public virtual object Clone()
{
BrowseFilters clone = (BrowseFilters)MemberwiseClone();
clone.PropertyIDs = (PropertyID[])((PropertyIDs != null)?PropertyIDs.Clone():null);
return(clone);
}
/// <summary>
/// Метод рекурсивного поиска тегов в UA структурах и добавление их в disoveredTags
/// </summary>
/// <param name="id">объект который надо просканировать</param>
private int Browse(Opc.ItemIdentifier id = null)
{
try
{
var filters = new Opc.Da.BrowseFilters {
BrowseFilter = Opc.Da.browseFilter.all
};
Opc.Da.BrowsePosition pos = null;
var elements = server.Browse(id, filters, out pos);
if (elements != null)
{
foreach (Opc.Da.BrowseElement element in elements)
{
if (element.IsItem)
{
_tags.Add(new Opc.Da.Item {
ItemName = element.ItemName
});
}
if (element.HasChildren)
{
Browse(new Opc.ItemIdentifier(element.ItemPath, element.ItemName));
}
}
}
return(0);
}
catch (Exception ex)
{
return(-1);
}
}
// Token: 0x06000049 RID: 73 RVA: 0x000035E4 File Offset: 0x000025E4
public BrowseElement[] Browse(ItemIdentifier itemID, BrowseFilters filters, out BrowsePosition position)
{
if (this.m_server == null)
{
throw new NotConnectedException();
}
return(((IServer)this.m_server).Browse(itemID, filters, out position));
}
// Token: 0x060007CA RID: 1994 RVA: 0x00012ADE File Offset: 0x00011ADE
public BrowsePosition(ItemIdentifier itemID, BrowseFilters filters)
{
if (filters == null)
{
throw new ArgumentNullException("filters");
}
this.m_itemID = ((itemID != null) ? ((ItemIdentifier)itemID.Clone()) : null);
this.m_filters = (BrowseFilters)filters.Clone();
}
//public bool IsConnectedToOPCDAServer { get { if (oPCDAServer == null) return false; else return oPCDAServer.IsConnected; } }
#endregion
public OPCClassicBrowserEngine()
{
this.OPCGroupSizeLimit = OPCBackEnd.Config.OPCClassic_SubscriptionGroupSizeLimit.ToInt(40);
_OPCWrapper = new OpcCom.ServerEnumerator();
_BrowseFilters = new Opc.Da.BrowseFilters()
{
ReturnAllProperties = true,
ReturnPropertyValues = true,
BrowseFilter = Opc.Da.browseFilter.all,
MaxElementsReturned = 0
};
//Check for Tag Inactivity every 5s. Every call by client will update it's activity.
//If tag has been inactive for more than 3x it's update interval, remove the tag from subscription (5s min inactivity time)
OPTimer CheckInactivityTimer = new OPTimer("OPC Classic Browser Engine Check Inactivity Timer", 5000);
CheckInactivityTimer.Elapsed += (s) =>
{
List <RegisteredTag> InactiveTags = this.RegisteredTags.Values.Where(RT =>
{
if (RT.UpdateIntervalInMS <= 5000)
{
return((DateTime.Now - RT.LastCalled).TotalMilliseconds > 5000);
}
else
{
return((DateTime.Now - RT.LastCalled).TotalMilliseconds > 3 * RT.UpdateIntervalInMS);
}
}).ToList();
foreach (RegisteredTag InactiveTag in InactiveTags)
{
foreach (Opc.Da.Server OPCServer in _OPCDAServers)
{
if (!OPCServer.IsConnected)
{
continue;
}
Subscription SubscriptionWhereInactiveTagIs = OPCServer.Subscriptions.FindSubcriptionThatHasItem(InactiveTag.Id, out Item InactiveItem);
if (SubscriptionWhereInactiveTagIs != null)
{
SubscriptionWhereInactiveTagIs.RemoveItems(new ItemIdentifier[] { InactiveItem });
}
}
this.RegisteredTags.Remove(InactiveTag.Id);
}
return(Task.CompletedTask);
};
CheckInactivityTimer.Start();
}
