private OpcRcw.Da.OPCITEMDEF[] GetOPCITEMDEFs(OpcItem[] input)
{
OpcRcw.Da.OPCITEMDEF[] output = null;
if (input != null)
{
output = new OpcRcw.Da.OPCITEMDEF[input.Length];
for (int ii = 0; ii < input.Length; ii++)
{
output[ii] = new OpcRcw.Da.OPCITEMDEF();
output[ii].szItemID = input[ii].ItemName;
output[ii].szAccessPath = input[ii].ItemPath ?? String.Empty;
output[ii].bActive = 1;
//todo
//output[ii].vtRequestedDataType = 2;
output[ii].vtRequestedDataType = (short)VarEnum.VT_EMPTY; //(short)HD.OPC.Client.Core.Com.Interop.GetType(input[ii].ReqType);
//output[ii].vtRequestedDataType = 4;
output[ii].hClient = input[ii].ClientHandle.GetHashCode();
output[ii].dwBlobSize = 0;
output[ii].pBlob = IntPtr.Zero;
}
}
return(output);
}
private bool AddItem(OPCItem item)
{
bool flag = true;
OPCITEMDEF[] pItemArray = new OPCITEMDEF[1];
pItemArray[0].szAccessPath = "";
pItemArray[0].szItemID = item.OPCItemName;
pItemArray[0].bActive = item.IsActive ? 1 : 0;
pItemArray[0].hClient = item.ClientHandler;
pItemArray[0].dwBlobSize = 0;
pItemArray[0].pBlob = IntPtr.Zero;
pItemArray[0].vtRequestedDataType = 0;
IntPtr zero = IntPtr.Zero;
IntPtr ppErrors = IntPtr.Zero;
try
{
((IOPCItemMgt) this.group).AddItems(1, pItemArray, out zero, out ppErrors);
int[] destination = new int[1];
Marshal.Copy(ppErrors, destination, 0, 1);
if (destination[0] == 0)
{
OPCITEMRESULT opcitemresult = (OPCITEMRESULT) Marshal.PtrToStructure(zero, typeof(OPCITEMRESULT));
item.ServerHandler = opcitemresult.hServer;
return flag;
}
flag = false;
throw new Exception("在组中添加项不成功，原因：" + this.parent.GetLastError(destination[0]));
}
finally
{
if (zero != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(zero);
zero = IntPtr.Zero;
}
if (ppErrors != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(ppErrors);
ppErrors = IntPtr.Zero;
}
}
return flag;
}
/// <summary>
/// Adds all items to the group that have not already been added.
/// </summary>
public void AddItems()
{
// count the number of items to add.
List <GroupItem> itemsToAdd = new List <GroupItem>();
lock (Lock)
{
for (int ii = 0; ii < m_items.Count; ii++)
{
if (!m_items[ii].Created)
{
itemsToAdd.Add(m_items[ii]);
}
}
}
// check if nothing to do.
if (itemsToAdd.Count == 0)
{
return;
}
// create item definitions.
int count = itemsToAdd.Count;
OpcRcw.Da.OPCITEMDEF[] definitions = new OpcRcw.Da.OPCITEMDEF[count];
for (int ii = 0; ii < count; ii++)
{
definitions[ii] = new OpcRcw.Da.OPCITEMDEF();
definitions[ii].szItemID = itemsToAdd[ii].ItemId;
definitions[ii].bActive = (itemsToAdd[ii].Active) ? 1 : 0;
definitions[ii].szAccessPath = String.Empty;
definitions[ii].vtRequestedDataType = (short)VarEnum.VT_EMPTY;
definitions[ii].hClient = itemsToAdd[ii].ClientHandle;
}
// initialize output parameters.
IntPtr pResults = IntPtr.Zero;
IntPtr pErrors = IntPtr.Zero;
// add items to group.
string methodName = "IOPCItemMgt.AddItems";
try
{
IOPCItemMgt server = BeginComCall <IOPCItemMgt>(methodName, true);
server.AddItems(
count,
definitions,
out pResults,
out pErrors);
}
catch (Exception e)
{
ComUtils.TraceComError(e, methodName);
for (int ii = 0; ii < itemsToAdd.Count; ii++)
{
itemsToAdd[ii].ErrorId = Marshal.GetHRForException(e);
}
return;
}
finally
{
EndComCall(methodName);
}
// unmarshal output parameters.
int[] serverHandles = GetItemResults(ref pResults, count, true);
int[] errors = ComUtils.GetInt32s(ref pErrors, count, true);
// save handles and error codes.
for (int ii = 0; ii < count; ii++)
{
GroupItem item = itemsToAdd[ii];
item.ServerHandle = serverHandles[ii];
item.ErrorId = errors[ii];
if (item.ErrorId >= 0)
{
itemsToAdd[ii].Created = true;
}
}
/*
* Utils.Trace(
* "Group {0} AddItems({4}/{5}) {1}/{2}ms {3}%",
* m_clientHandle,
* m_samplingInterval,
* m_actualSamplingInterval,
* m_deadband,
* itemsToAdd.Count,
* m_items.Count);
*/
}
/// <summary>
/// Adds all items to the group that have not already been added.
/// </summary>
public void AddItems()
{
// count the number of items to add.
List<GroupItem> itemsToAdd = new List<GroupItem>();
lock (Lock)
{
for (int ii = 0; ii < m_items.Count; ii++)
{
if (!m_items[ii].Created)
{
itemsToAdd.Add(m_items[ii]);
}
}
}
// check if nothing to do.
if (itemsToAdd.Count == 0)
{
return;
}
// create item definitions.
int count = itemsToAdd.Count;
OpcRcw.Da.OPCITEMDEF[] definitions = new OpcRcw.Da.OPCITEMDEF[count];
for (int ii = 0; ii < count; ii++)
{
definitions[ii] = new OpcRcw.Da.OPCITEMDEF();
definitions[ii].szItemID = itemsToAdd[ii].ItemId;
definitions[ii].bActive = (itemsToAdd[ii].Active) ? 1 : 0;
definitions[ii].szAccessPath = String.Empty;
definitions[ii].vtRequestedDataType = (short)VarEnum.VT_EMPTY;
definitions[ii].hClient = itemsToAdd[ii].ClientHandle;
}
// initialize output parameters.
IntPtr pResults = IntPtr.Zero;
IntPtr pErrors = IntPtr.Zero;
// add items to group.
string methodName = "IOPCItemMgt.AddItems";
try
{
IOPCItemMgt server = BeginComCall<IOPCItemMgt>(methodName, true);
server.AddItems(
count,
definitions,
out pResults,
out pErrors);
}
catch (Exception e)
{
ComUtils.TraceComError(e, methodName);
for (int ii = 0; ii < itemsToAdd.Count; ii++)
{
itemsToAdd[ii].ErrorId = Marshal.GetHRForException(e);
}
return;
}
finally
{
EndComCall(methodName);
}
// unmarshal output parameters.
int[] serverHandles = GetItemResults(ref pResults, count, true);
int[] errors = ComUtils.GetInt32s(ref pErrors, count, true);
// save handles and error codes.
for (int ii = 0; ii < count; ii++)
{
GroupItem item = itemsToAdd[ii];
item.ServerHandle = serverHandles[ii];
item.ErrorId = errors[ii];
if (item.ErrorId >= 0)
{
itemsToAdd[ii].Created = true;
}
}
/*
Utils.Trace(
"Group {0} AddItems({4}/{5}) {1}/{2}ms {3}%",
m_clientHandle,
m_samplingInterval,
m_actualSamplingInterval,
m_deadband,
itemsToAdd.Count,
m_items.Count);
*/
}
/// <summary>
/// IOPCItemMgt::ValidateItems - Determines if an item is valid.
/// Also returns information about the item such as canonical datatype, etc.
/// </summary>
public void ValidateItems(
int dwCount,
OPCITEMDEF[] pItemArray,
int bBlobUpdate,
out System.IntPtr ppValidationResults,
out System.IntPtr ppErrors)
{
lock (m_lock)
{
if (m_subscription == null) throw ComUtils.CreateComException(ResultIds.E_FAIL);
// validate arguments.
if (dwCount == 0 || pItemArray == null || dwCount != pItemArray.Length)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
try
{
int[] errors = new int[dwCount];
OPCITEMRESULT[] results = new OPCITEMRESULT[dwCount];
for (int ii = 0; ii < dwCount; ii++)
{
results[ii].hServer = 0;
results[ii].dwBlobSize = 0;
results[ii].pBlob = IntPtr.Zero;
results[ii].vtCanonicalDataType = (short)VarEnum.VT_EMPTY;
results[ii].dwAccessRights = 0;
results[ii].wReserved = 0;
// parse node id.
NodeId nodeId = Server.ItemIdToNodeId(pItemArray[ii].szItemID);
if (nodeId == null)
{
errors[ii] = ResultIds.E_INVALIDITEMID;
continue;
}
// find node.
VariableNode variable = m_session.NodeCache.Find(nodeId) as VariableNode;
if (variable == null)
{
errors[ii] = ResultIds.E_INVALIDITEMID;
continue;
}
// validated the requested datatype.
if (pItemArray[ii].vtRequestedDataType != 0)
{
if (ComUtils.GetSystemType(pItemArray[ii].vtRequestedDataType) == null)
{
errors[ii] = ResultIds.E_BADTYPE;
continue;
}
}
// fill in metadata.
results[ii].vtCanonicalDataType = (short)m_server.DataTypeToVarType(variable.DataType, variable.ValueRank);
results[ii].dwAccessRights = ComUtils.GetAccessRights(variable.AccessLevel);
if (results[ii].vtCanonicalDataType == (short)VarEnum.VT_VARIANT)
{
results[ii].vtCanonicalDataType = (short)VarEnum.VT_EMPTY;
}
errors[ii] = ResultIds.S_OK;
}
// marshal the results.
ppValidationResults = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(OPCITEMRESULT))*dwCount);
IntPtr pos = ppValidationResults;
for (int ii = 0; ii < dwCount; ii++)
{
Marshal.StructureToPtr(results[ii], pos, false);
pos = (IntPtr)(pos.ToInt32() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMRESULT)));
}
// marshal error codes.
ppErrors = ComUtils.GetInt32s(errors);
}
catch (Exception e)
{
throw ComUtils.CreateComException(e);
}
}
}
/// <summary>
/// IOPCItemMgt::AddItems - Adds one or more items to a group.
/// </summary>
public void AddItems(
int dwCount,
OPCITEMDEF[] pItemArray,
out System.IntPtr ppAddResults,
out System.IntPtr ppErrors)
{
lock (m_lock)
{
if (m_subscription == null) throw ComUtils.CreateComException(ResultIds.E_FAIL);
// validate arguments.
if (dwCount == 0 || pItemArray == null || dwCount != pItemArray.Length)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
try
{
// compile set of item modifications.
int[] errors = new int[dwCount];
OPCITEMRESULT[] results = new OPCITEMRESULT[dwCount];
List<Item> itemsToAdd = new List<Item>();
for (int ii = 0; ii < dwCount; ii++)
{
OPCITEMDEF itemToAdd = pItemArray[ii];
// initialize result structure.
results[ii].hServer = 0;
results[ii].dwBlobSize = 0;
results[ii].pBlob = IntPtr.Zero;
results[ii].vtCanonicalDataType = (short)VarEnum.VT_EMPTY;
results[ii].dwAccessRights = 0;
results[ii].wReserved = 0;
// parse node id.
NodeId nodeId = Server.ItemIdToNodeId(itemToAdd.szItemID);
if (nodeId == null)
{
errors[ii] = ResultIds.E_INVALIDITEMID;
continue;
}
// find node.
VariableNode variable = m_session.NodeCache.Find(nodeId) as VariableNode;
if (variable == null)
{
errors[ii] = ResultIds.E_INVALIDITEMID;
continue;
}
// validated the requested datatype.
if (itemToAdd.vtRequestedDataType != 0)
{
if (ComUtils.GetSystemType(itemToAdd.vtRequestedDataType) == null)
{
errors[ii] = ResultIds.E_BADTYPE;
continue;
}
}
// fill in metadata.
results[ii].vtCanonicalDataType = (short)m_server.DataTypeToVarType(variable.DataType, variable.ValueRank);
results[ii].dwAccessRights = ComUtils.GetAccessRights(variable.AccessLevel);
if (results[ii].vtCanonicalDataType == (short)VarEnum.VT_VARIANT)
{
results[ii].vtCanonicalDataType = (short)VarEnum.VT_EMPTY;
}
// create an item.
Item item = new Item();
item.ItemId = itemToAdd.szItemID;
item.ClientHandle = itemToAdd.hClient;
item.ServerHandle = ii; // save this temporarily to correlate response to request list.
item.Active = itemToAdd.bActive != 0;
item.ReqType = (VarEnum)itemToAdd.vtRequestedDataType;
item.Variable = variable;
// check if the item supports deadband.
INode euRange = m_session.NodeCache.Find(nodeId, ReferenceTypeIds.HasProperty, false, true, Opc.Ua.BrowseNames.EURange);
if (euRange != null)
{
item.DeadbandSupported = true;
}
// create a monitored item.
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.StartNodeId = nodeId;
monitoredItem.AttributeId = Attributes.Value;
monitoredItem.MonitoringMode = (item.Active)?MonitoringMode.Reporting:MonitoringMode.Disabled;
monitoredItem.SamplingInterval = m_updateRate;
monitoredItem.QueueSize = 0;
monitoredItem.DiscardOldest = true;
monitoredItem.Encoding = null;
monitoredItem.Filter = null;
monitoredItem.IndexRange = null;
if (m_deadband != 0 && item.DeadbandSupported)
{
DataChangeFilter filter = new DataChangeFilter();
filter.DeadbandType = (uint)(int)DeadbandType.Percent;
filter.DeadbandValue = m_deadband;
filter.Trigger = DataChangeTrigger.StatusValue;
monitoredItem.Filter = filter;
}
item.MonitoredItem = monitoredItem;
itemsToAdd.Add(item);
// update the subscription.
m_subscription.AddItem(monitoredItem);
}
if (itemsToAdd.Count > 0)
{
// create monitored items on the UA server.
m_subscription.ApplyChanges();
foreach (Item item in itemsToAdd)
{
// check for error during add.
int index = item.ServerHandle;
MonitoredItem monitoredItem = item.MonitoredItem;
if (ServiceResult.IsBad(monitoredItem.Status.Error))
{
errors[index] = Server.MapReadStatusToErrorCode(monitoredItem.Status.Error.StatusCode);
m_subscription.RemoveItem(monitoredItem);
continue;
}
// save server handle.
results[index].hServer = item.ServerHandle = Utils.ToInt32(monitoredItem.ClientHandle);
// add an entry in the cache.
CreateCacheEntry(item);
// index item.
m_items[item.ServerHandle] = item;
}
}
// marshal the results.
ppAddResults = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(OPCITEMRESULT))*dwCount);
IntPtr pos = ppAddResults;
for (int ii = 0; ii < dwCount; ii++)
{
Marshal.StructureToPtr(results[ii], pos, false);
pos = (IntPtr)(pos.ToInt32() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMRESULT)));
}
// marshal error codes.
ppErrors = ComUtils.GetInt32s(errors);
}
catch (Exception e)
{
throw ComUtils.CreateComException(e);
}
}
}
