private void OkBTN_Click(object sender, EventArgs e)
{
try
{
BrowsePathCollection browsePaths = new BrowsePathCollection();
BrowsePath browsePath = new BrowsePath();
browsePath.StartingNode = NodeId.Parse(StartNode.Text);
browsePath.RelativePath = Opc.Ua.RelativePath.Parse(RelativePath.Text, m_session.TypeTree);
browsePaths.Add(browsePath);
BrowsePathResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.TranslateBrowsePathsToNodeIds(
null,
browsePaths,
out results,
out diagnosticInfos);
if (results != null && results.Count == 1)
{
// NodesCTRL.SetNodeList(results[0].MatchingNodeIds);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <summary>
/// Resolves all relative paths to nodes on the server.
/// </summary>
public async Task ResolveItemNodeIdsAsync(CancellationToken ct)
{
VerifySubscriptionState(true);
// collect list of browse paths.
BrowsePathCollection browsePaths = new BrowsePathCollection();
List <MonitoredItem> itemsToBrowse = new List <MonitoredItem>();
PrepareResolveItemNodeIds(browsePaths, itemsToBrowse);
// nothing to do.
if (browsePaths.Count == 0)
{
return;
}
// translate browse paths.
var response = await m_session.TranslateBrowsePathsToNodeIdsAsync(
null,
browsePaths,
ct).ConfigureAwait(false);
BrowsePathResultCollection results = response.Results;
ClientBase.ValidateResponse(results, browsePaths);
ClientBase.ValidateDiagnosticInfos(response.DiagnosticInfos, browsePaths);
// update results.
for (int ii = 0; ii < results.Count; ii++)
{
itemsToBrowse[ii].SetResolvePathResult(results[ii], ii, response.DiagnosticInfos, response.ResponseHeader);
}
m_changeMask |= SubscriptionChangeMask.ItemsModified;
}
public async Task TranslateBrowsePathsToNodeIdsAsync()
{
var browsePaths = new BrowsePathCollection();
var browsePath = new BrowsePath()
{
StartingNode = ObjectIds.RootFolder,
RelativePath = new RelativePath("Types")
};
for (int ii = 0; ii < kOperationLimit * 2; ii++)
{
browsePaths.Add(browsePath);
}
var requestHeader = new RequestHeader();
var response = await Session.TranslateBrowsePathsToNodeIdsAsync(requestHeader,
browsePaths, CancellationToken.None).ConfigureAwait(false);
BrowsePathResultCollection results = response.Results;
DiagnosticInfoCollection diagnosticInfos = response.DiagnosticInfos;
ClientBase.ValidateResponse(results, browsePaths);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, browsePaths);
Assert.NotNull(response.ResponseHeader);
}
/// <summary>
/// Worker method to translate the browse path.
/// </summary>
public static BrowsePathResultCollection TranslateBrowsePathWorker(
IServerTestServices services,
ReferenceDescriptionCollection referenceDescriptions,
RequestHeader requestHeader,
OperationLimits operationLimits)
{
// Browse template
var startingNode = Objects.RootFolder;
requestHeader.Timestamp = DateTime.UtcNow;
// TranslateBrowsePath
bool verifyMaxNodesPerBrowse = operationLimits.MaxNodesPerTranslateBrowsePathsToNodeIds > 0;
var browsePaths = new BrowsePathCollection(
referenceDescriptions.Select(r => new BrowsePath()
{
RelativePath = new RelativePath(r.BrowseName), StartingNode = startingNode
})
);
BrowsePathResultCollection allBrowsePaths = new BrowsePathResultCollection();
while (browsePaths.Any())
{
if (verifyMaxNodesPerBrowse &&
browsePaths.Count > operationLimits.MaxNodesPerTranslateBrowsePathsToNodeIds)
{
verifyMaxNodesPerBrowse = false;
// Test if server responds with BadTooManyOperations
var sre = Assert.Throws <ServiceResultException>(() =>
_ = services.TranslateBrowsePathsToNodeIds(requestHeader, browsePaths, out var results, out var infos));
Assert.AreEqual(StatusCodes.BadTooManyOperations, sre.StatusCode);
}
var browsePathSnippet = (operationLimits.MaxNodesPerTranslateBrowsePathsToNodeIds > 0) ?
browsePaths.Take((int)operationLimits.MaxNodesPerTranslateBrowsePathsToNodeIds).ToArray() :
browsePaths;
ResponseHeader response = services.TranslateBrowsePathsToNodeIds(requestHeader, browsePathSnippet, out var browsePathResults, out var diagnosticInfos);
ServerFixtureUtils.ValidateResponse(response);
ServerFixtureUtils.ValidateDiagnosticInfos(diagnosticInfos, browsePathSnippet);
allBrowsePaths.AddRange(browsePathResults);
foreach (var result in browsePathResults)
{
if (result.Targets?.Count > 0)
{
TestContext.Out.WriteLine("BrowsePath {0}", result.Targets[0].ToString());
}
}
if (operationLimits.MaxNodesPerTranslateBrowsePathsToNodeIds == 0)
{
browsePaths.Clear();
}
else
{
browsePaths = browsePaths.Skip((int)operationLimits.MaxNodesPerTranslateBrowsePathsToNodeIds).ToArray();
}
}
return(allBrowsePaths);
}
public ResponseHeader TranslateBrowsePathsToNodeIds(
RequestHeader requestHeader,
BrowsePathCollection browsePaths,
out BrowsePathResultCollection results,
out DiagnosticInfoCollection diagnosticInfos)
{
return(m_session.TranslateBrowsePathsToNodeIds(requestHeader,
browsePaths,
out results, out diagnosticInfos));
}
/// <summary>
/// Invokes the TranslateBrowsePathsToNodeIds service.
/// </summary>
public virtual ResponseHeader TranslateBrowsePathsToNodeIds(
RequestHeader requestHeader,
BrowsePathCollection browsePaths,
out BrowsePathResultCollection results,
out DiagnosticInfoCollection diagnosticInfos)
{
results = null;
diagnosticInfos = null;
ValidateRequest(requestHeader);
// Insert implementation.
return(CreateResponse(requestHeader, StatusCodes.BadServiceUnsupported));
}
/// <summary>
/// Invokes the TranslateBrowsePathsToNodeIds service.
/// </summary>
public virtual ResponseHeader TranslateBrowsePathsToNodeIds(
RequestHeader requestHeader,
BrowsePathCollection browsePaths,
out BrowsePathResultCollection results,
out DiagnosticInfoCollection diagnosticInfos)
{
results = null;
diagnosticInfos = null;
ValidateRequest(requestHeader);
// Insert implementation.
return CreateResponse(requestHeader, StatusCodes.BadServiceUnsupported);
}
/// <summary>
/// Invokes the TranslateBrowsePathsToNodeIds service.
/// </summary>
/// <param name="requestHeader">The request header.</param>
/// <param name="browsePaths">The list of browse paths for which NodeIds are being requested.</param>
/// <param name="results">The list of results for the list of browse paths.</param>
/// <param name="diagnosticInfos">The diagnostic information for the results.</param>
/// <returns>
/// Returns a <see cref="ResponseHeader"/> object
/// </returns>
public override ResponseHeader TranslateBrowsePathsToNodeIds(
RequestHeader requestHeader,
BrowsePathCollection browsePaths,
out BrowsePathResultCollection results,
out DiagnosticInfoCollection diagnosticInfos)
{
results = null;
diagnosticInfos = null;
OperationContext context = ValidateRequest(requestHeader, RequestType.TranslateBrowsePathsToNodeIds);
try
{
if (browsePaths == null || browsePaths.Count == 0)
{
throw new ServiceResultException(StatusCodes.BadNothingToDo);
}
m_serverInternal.NodeManager.TranslateBrowsePathsToNodeIds(
context,
browsePaths,
out results,
out diagnosticInfos);
return CreateResponse(requestHeader, context.StringTable);
}
catch (ServiceResultException e)
{
lock (ServerInternal.DiagnosticsLock)
{
ServerInternal.ServerDiagnostics.RejectedRequestsCount++;
if (IsSecurityError(e.StatusCode))
{
ServerInternal.ServerDiagnostics.SecurityRejectedRequestsCount++;
}
}
throw TranslateException(context, e);
}
finally
{
OnRequestComplete(context);
}
}
/// <summary>
/// Gets the available attributes for an HDA item.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="nodeId">The node id.</param>
/// <returns></returns>
private ReadValueIdCollection GetAvailableAttributes(Session session, NodeId nodeId)
{
ReadValueIdCollection supportedAttributes = new ReadValueIdCollection();
// add mandatory HDA attributes.
supportedAttributes.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_ITEMID, Attributes.DisplayName));
supportedAttributes.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_DATA_TYPE, Attributes.DataType));
supportedAttributes.Add(Construct(nodeId, ComHdaProxy.INTERNAL_ATTRIBUTE_VALUE_RANK, Attributes.ValueRank));
supportedAttributes.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_DESCRIPTION, Attributes.Description));
supportedAttributes.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_ARCHIVING, Attributes.Historizing));
// check if nodes are defined for all optional HDA attributes.
BrowsePathCollection pathsToRead = new BrowsePathCollection();
pathsToRead.Add(Construct(nodeId, ComHdaProxy.INTERNAL_ATTRIBUTE_ANNOTATION, Opc.Ua.BrowseNames.Annotations));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_ENG_UNITS, Opc.Ua.BrowseNames.EngineeringUnits));;
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_DERIVE_EQUATION, Opc.Ua.BrowseNames.Definition));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_NORMAL_MAXIMUM, Opc.Ua.BrowseNames.EURange));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_NORMAL_MINIMUM, Opc.Ua.BrowseNames.EURange));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_HIGH_ENTRY_LIMIT, Opc.Ua.BrowseNames.InstrumentRange));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_LOW_ENTRY_LIMIT, Opc.Ua.BrowseNames.InstrumentRange));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_STEPPED, Opc.Ua.BrowseNames.HAConfiguration, Opc.Ua.BrowseNames.Stepped));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_MAX_TIME_INT, Opc.Ua.BrowseNames.HAConfiguration, Opc.Ua.BrowseNames.MaxTimeInterval));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_MIN_TIME_INT, Opc.Ua.BrowseNames.HAConfiguration, Opc.Ua.BrowseNames.MinTimeInterval));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_EXCEPTION_DEV, Opc.Ua.BrowseNames.HAConfiguration, Opc.Ua.BrowseNames.ExceptionDeviation));
pathsToRead.Add(Construct(nodeId, OpcRcw.Hda.Constants.OPCHDA_EXCEPTION_DEV_TYPE, Opc.Ua.BrowseNames.HAConfiguration, Opc.Ua.BrowseNames.ExceptionDeviationFormat));
BrowsePathResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.TranslateBrowsePathsToNodeIds(
null,
pathsToRead,
out results,
out diagnosticInfos);
Session.ValidateResponse(results, pathsToRead);
Session.ValidateDiagnosticInfos(diagnosticInfos, pathsToRead);
for (int ii = 0; ii < pathsToRead.Count; ii++)
{
uint attributeId = (uint)pathsToRead[ii].Handle;
// path does not exist.
if (StatusCode.IsBad(results[ii].StatusCode))
{
continue;
}
// nothing found.
if (results[ii].Targets.Count == 0)
{
continue;
}
// choose the first valid target.
for (int jj = 0; jj < results[ii].Targets.Count; jj++)
{
BrowsePathTarget target = results[ii].Targets[jj];
if (target.RemainingPathIndex == UInt32.MaxValue && !NodeId.IsNull(target.TargetId) && !target.TargetId.IsAbsolute)
{
supportedAttributes.Add(Construct((NodeId)target.TargetId, attributeId, Attributes.Value));
break;
}
}
}
return(supportedAttributes);
}
/// <summary>
/// Sets the filtering criteria to be used for the event subscription.
/// </summary>
/// <param name="dwEventType">Bit mask specifying which event types are of interest</param>
/// <param name="dwNumCategories">Length of array of event categories. A length of 0 indicates all categories should be included in the filter.</param>
/// <param name="pdwEventCategories">Array of event categories of interest.</param>
/// <param name="dwLowSeverity">Lowest severity of interest (inclusive).</param>
/// <param name="dwHighSeverity">Highest severity of interest (inclusive).</param>
/// <param name="dwNumAreas">Length of array of areas. A length of 0 indicates all areas should be included in the filter.</param>
/// <param name="pszAreaList">Array of process area strings of interest - only events or conditions in these areas will be reported.</param>
/// <param name="dwNumSources">Length of array of event sources. A length of 0 indicates all sources should be included in the filter.</param>
/// <param name="pszSourceList">Array of event sources of interest - only events from these sources will be reported.</param>
public void SetFilter(int dwEventType, int dwNumCategories, int[] pdwEventCategories, int dwLowSeverity, int dwHighSeverity, int dwNumAreas, string[] pszAreaList, int dwNumSources, string[] pszSourceList)
{
try
{
if (dwEventType == 0 |
dwEventType > OpcRcw.Ae.Constants.ALL_EVENTS |
pdwEventCategories.Rank > 1 | dwNumCategories != pdwEventCategories.Length |
pszAreaList.Rank > 1 | dwNumAreas != pszAreaList.Length |
pszSourceList.Rank > 1 | dwNumSources != pszSourceList.Length |
dwLowSeverity < 1 | dwLowSeverity > 1000 | dwHighSeverity > 1000 | dwHighSeverity <1 |
dwLowSeverity> dwHighSeverity)
{
throw ComUtils.CreateComException("SetFilter", ResultIds.E_INVALIDARG);
}
if (dwNumCategories != 0)
{
for (int i = 0; i < dwNumCategories; i++)
{
// Make sure we are passed a valid dwEventCategory
NodeId catNodeId = m_server.FindEventCatNodeId(pdwEventCategories[i]);
if (catNodeId == null)
{
throw ComUtils.CreateComException("SetFilter", ResultIds.E_INVALIDARG);
}
}
}
m_server.RemoveMonitoredItems(m_AreaVector);
if (dwNumAreas != 0)
{
List <string> szAreas = new List <string>();
for (int i = 0; i < dwNumAreas; i++)
{
szAreas.Add(pszAreaList[i]);
}
if (szAreas.Count > 0)
{
m_server.AddMonitoredItems(szAreas);
}
}
if (dwNumSources != 0)
{
List <string> szSources = new List <string>();
for (int i = 0; i < dwNumSources; i++)
{
int wildCardLocation = 0;
if ((wildCardLocation = pszSourceList[i].IndexOfAny(new char[] { '*', '?', '#', '[', ']', '!', '-' })) != -1)
{
// The string contains wildcards
List <string> items = m_server.ProcessWildCardAreaName(pszSourceList[i], wildCardLocation);
if (items.Count == 0)
{
throw ComUtils.CreateComException("SetFilter", ResultIds.E_INVALIDARG);
}
foreach (string item in items)
{
szSources.Add(item);
}
}
else
{
szSources.Add(pszSourceList[i]);
}
}
//Translate the fully qualified source name to NodeId
BrowsePathResultCollection results = m_server.GetBrowseTargets(szSources);
for (int i = 0; i < dwNumSources; i++)
{
if (StatusCode.IsBad(results[i].StatusCode))
{
throw ComUtils.CreateComException("SetFilter", ResultIds.E_INVALIDARG);
}
}
}
m_dwEventType = dwEventType;
m_dwLowSeverity = dwLowSeverity;
m_dwHighSeverity = dwHighSeverity;
m_EventCategoryVector.Clear();
if (dwNumCategories != 0)
{
for (int i = 0; i < dwNumCategories; i++)
{
m_EventCategoryVector.AddUnique(pdwEventCategories[i]);
}
}
m_server.RemoveMonitoredItems(m_AreaVector);
m_AreaVector.Clear();
if (dwNumAreas != 0)
{
for (int i = 0; i < dwNumAreas; i++)
{
m_AreaVector.AddUnique(pszAreaList[i]);
}
}
m_SourceVector.Clear();
if (dwNumSources != 0)
{
for (int i = 0; i < dwNumSources; i++)
{
m_SourceVector.AddUnique(pszSourceList[i]);
}
}
}
catch (COMException e)
{
throw ComUtils.CreateComException(e);
}
catch (Exception e)
{
Utils.Trace(e, "Unexpected error in SetFilter");
throw ComUtils.CreateComException(e);
}
}
/// <summary>
/// Translates a start node id plus a relative paths into a node id.
/// </summary>
public virtual void TranslateBrowsePathsToNodeIds(
OperationContext context,
BrowsePathCollection browsePaths,
out BrowsePathResultCollection results,
out DiagnosticInfoCollection diagnosticInfos)
{
if (browsePaths == null)throw new ArgumentNullException("browsePaths");
bool diagnosticsExist = false;
results = new BrowsePathResultCollection(browsePaths.Count);
diagnosticInfos = new DiagnosticInfoCollection(browsePaths.Count);
for (int ii = 0; ii < browsePaths.Count; ii++)
{
// check if request has timed out or been cancelled.
if (StatusCode.IsBad(context.OperationStatus))
{
throw new ServiceResultException(context.OperationStatus);
}
BrowsePath browsePath = browsePaths[ii];
BrowsePathResult result = new BrowsePathResult();
result.StatusCode = StatusCodes.Good;
results.Add(result);
ServiceResult error = null;
// need to trap unexpected exceptions to handle bugs in the node managers.
try
{
error = TranslateBrowsePath(context, browsePath, result);
}
catch (Exception e)
{
error = ServiceResult.Create(e, StatusCodes.BadUnexpectedError, "Unexpected error translating browse path.");
}
if (ServiceResult.IsGood(error))
{
// check for no match.
if (result.Targets.Count == 0)
{
error = StatusCodes.BadNoMatch;
}
// put a placeholder for diagnostics.
else if ((context.DiagnosticsMask & DiagnosticsMasks.OperationAll) != 0)
{
diagnosticInfos.Add(null);
}
}
// check for error.
if (error != null && error.Code != StatusCodes.Good)
{
result.StatusCode = error.StatusCode;
if ((context.DiagnosticsMask & DiagnosticsMasks.OperationAll) != 0)
{
DiagnosticInfo diagnosticInfo = ServerUtils.CreateDiagnosticInfo(m_server, context, error);
diagnosticInfos.Add(diagnosticInfo);
diagnosticsExist = true;
}
}
}
// clear the diagnostics array if no diagnostics requested or no errors occurred.
UpdateDiagnostics(context, diagnosticsExist, ref diagnosticInfos);
}
/// <summary>
/// Finishes an asynchronous invocation of the TranslateBrowsePathsToNodeIds service.
/// </summary>
public ResponseHeader EndTranslateBrowsePathsToNodeIds(
IAsyncResult result,
out BrowsePathResultCollection results,
out DiagnosticInfoCollection diagnosticInfos)
{
TranslateBrowsePathsToNodeIdsResponse response = null;
try
{
if (UseTransportChannel)
{
IServiceResponse genericResponse = TransportChannel.EndSendRequest(result);
if (genericResponse == null)
{
throw new ServiceResultException(StatusCodes.BadUnknownResponse);
}
ValidateResponse(genericResponse.ResponseHeader);
response = (TranslateBrowsePathsToNodeIdsResponse)genericResponse;
}
else
{
TranslateBrowsePathsToNodeIdsResponseMessage responseMessage = InnerChannel.EndTranslateBrowsePathsToNodeIds(result);
if (responseMessage == null || responseMessage.TranslateBrowsePathsToNodeIdsResponse == null)
{
throw new ServiceResultException(StatusCodes.BadUnknownResponse);
}
response = responseMessage.TranslateBrowsePathsToNodeIdsResponse;
ValidateResponse(response.ResponseHeader);
}
results = response.Results;
diagnosticInfos = response.DiagnosticInfos;
}
finally
{
RequestCompleted(null, response, "TranslateBrowsePathsToNodeIds");
}
return response.ResponseHeader;
}
/// <summary>
/// Invokes the TranslateBrowsePathsToNodeIds service.
/// </summary>
public virtual ResponseHeader TranslateBrowsePathsToNodeIds(
RequestHeader requestHeader,
BrowsePathCollection browsePaths,
out BrowsePathResultCollection results,
out DiagnosticInfoCollection diagnosticInfos)
{
TranslateBrowsePathsToNodeIdsRequest request = new TranslateBrowsePathsToNodeIdsRequest();
TranslateBrowsePathsToNodeIdsResponse response = null;
request.RequestHeader = requestHeader;
request.BrowsePaths = browsePaths;
UpdateRequestHeader(request, requestHeader == null, "TranslateBrowsePathsToNodeIds");
try
{
if (UseTransportChannel)
{
IServiceResponse genericResponse = TransportChannel.SendRequest(request);
if (genericResponse == null)
{
throw new ServiceResultException(StatusCodes.BadUnknownResponse);
}
ValidateResponse(genericResponse.ResponseHeader);
response = (TranslateBrowsePathsToNodeIdsResponse)genericResponse;
}
else
{
TranslateBrowsePathsToNodeIdsResponseMessage responseMessage = InnerChannel.TranslateBrowsePathsToNodeIds(new TranslateBrowsePathsToNodeIdsMessage(request));
if (responseMessage == null || responseMessage.TranslateBrowsePathsToNodeIdsResponse == null)
{
throw new ServiceResultException(StatusCodes.BadUnknownResponse);
}
response = responseMessage.TranslateBrowsePathsToNodeIdsResponse;
ValidateResponse(response.ResponseHeader);
}
results = response.Results;
diagnosticInfos = response.DiagnosticInfos;
}
finally
{
RequestCompleted(request, response, "TranslateBrowsePathsToNodeIds");
}
return response.ResponseHeader;
}
/// <summary>
/// Updates the list of references.
/// </summary>
private void UpdateArguments(Session session, NodeId nodeId)
{
ArgumentsLV.Items.Clear();
// need to fetch the node ids for the argument properties.
BrowsePathCollection browsePaths = new BrowsePathCollection();
foreach (string browseName in new string[] { BrowseNames.InputArguments, BrowseNames.OutputArguments })
{
BrowsePath browsePath = new BrowsePath();
browsePath.StartingNode = nodeId;
browsePath.Handle = browseName;
RelativePathElement element = new RelativePathElement();
element.ReferenceTypeId = ReferenceTypeIds.HasProperty;
element.IsInverse = false;
element.IncludeSubtypes = true;
element.TargetName = browseName;
browsePath.RelativePath.Elements.Add(element);
browsePaths.Add(browsePath);
}
// translate property names.
BrowsePathResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.TranslateBrowsePathsToNodeIds(
null,
browsePaths,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, browsePaths);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, browsePaths);
// create a list of values to read.
ReadValueIdCollection valuesToRead = new ReadValueIdCollection();
for (int ii = 0; ii < results.Count; ii++)
{
if (StatusCode.IsBad(results[ii].StatusCode) || results[ii].Targets.Count <= 0)
{
continue;
}
ReadValueId valueToRead = new ReadValueId();
valueToRead.NodeId = (NodeId)results[ii].Targets[0].TargetId;
valueToRead.AttributeId = Attributes.Value;
valueToRead.Handle = browsePaths[ii].Handle;
valuesToRead.Add(valueToRead);
}
// read the values.
if (valuesToRead.Count > 0)
{
DataValueCollection values = null;
session.Read(
null,
0,
TimestampsToReturn.Neither,
valuesToRead,
out values,
out diagnosticInfos);
ClientBase.ValidateResponse(results, valuesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead);
// update the list control.
for (int ii = 0; ii < values.Count; ii++)
{
// all structures are wrapped in extension objects.
ExtensionObject[] extensions = values[ii].GetValue <ExtensionObject[]>(null);
if (extensions != null)
{
// convert to an argument structure.
Argument[] arguments = (Argument[])ExtensionObject.ToArray(extensions, typeof(Argument));
UpdateList(session, arguments, (string)valuesToRead[ii].Handle);
}
}
}
// auto size the columns.
for (int ii = 0; ii < ArgumentsLV.Columns.Count; ii++)
{
ArgumentsLV.Columns[ii].Width = -2;
}
}
public static void BrowseNode(String currentNode, String browseName)
{
BrowseResultCollection browseResultCollection = null;
DiagnosticInfoCollection diagnosticInfos;
BrowseDescriptionCollection browseDescriptionCollection = null;
List <NodeClass> nodeClasses = new List <NodeClass>()
{
NodeClass.Unspecified
};
foreach (NodeClass nodeClass in nodeClasses)
{
browseDescriptionCollection = PrepareBrowseDescriptionCollection(currentNode, (uint)nodeClass);
clientSession.Browse(
null,
null,
100,
browseDescriptionCollection,
out browseResultCollection,
out diagnosticInfos);
if (browseResultCollection.Where(br => br.References.Count > 0).FirstOrDefault() == null)
{
continue;
}
int browseResultCounter = browseResultCollection.FindIndex(br => br.References.Count > 0);
String referenceType = String.Empty;
foreach (BrowseResult browseResult in browseResultCollection)
{
switch (browseResultCounter)
{
case 0:
referenceType = "Organizes";
break;
case 1:
referenceType = "HasComponent";
break;
case 2:
referenceType = "HasChild";
break;
case 3:
referenceType = "HasDescription";
break;
case 4:
referenceType = "HasProperty";
break;
default:
referenceType = "HasProperty";
break;
}
if (browseResult.References.Count > 0)
{
foreach (ReferenceDescription referenceDescription in browseResult.References)
{
if (referenceDescription.BrowseName.NamespaceIndex != UaDefaultNamespaceIndex)
{
BrowseNode(referenceDescription.NodeId.ToString(), referenceDescription.BrowseName.ToString());
}
//TBD - If a node id has different relations with its parent node, the additional "relation" should be added
//OpcuaNodeList opcuaNodeSubStructure = new OpcuaNodeList();
//opcuaNodeSubStructure.nodeId = referenceDescription.NodeId.ToString();
//opcuaNodeSubStructure.browseName = referenceDescription.BrowseName.ToString();
OpcuaNodeLink opcuaNodeLink = new OpcuaNodeLink();
opcuaNodeLink.nodeID = referenceDescription.NodeId.ToString();
opcuaNodeLink.browseName = referenceDescription.BrowseName.ToString();
opcuaNodeLink.parentNodeId = currentNode;
opcuaNodeLink.parentNodebrowseName = browseName;
opcuaNodeLink.referenceType = referenceType;
if (referenceDescription.IsForward)
{
opcuaNodeLink.BrowseDirection = BrowseDirection.Forward.ToString("G");
}
opcuaNodeLink.NodeClassMask = nodeClass.ToString("G");
opcuaNodeLink.browseResultMask = BrowseResultMask.All.ToString("G");
//if (!opcuaNodeStructure.IsChildPresent(referenceDescription.NodeId.ToString()))
if (opcuaNodeStructure.ChildrenNodes == null)
{
opcuaNodeStructure.ChildrenNodes = new List <OpcuaNodeLink>();
}
addNode(opcuaNodeLink);
if (referenceDescription.NodeClass == NodeClass.Method)
{
Node methodNode = clientSession.ReadNode((NodeId)(referenceDescription.NodeId.ToString()));
browseDescriptionCollection = PrepareBrowseDescriptionCollection(referenceDescription.NodeId.ToString(), (uint)nodeClass);
clientSession.Browse(
null,
null,
100,
browseDescriptionCollection,
out browseResultCollection,
out diagnosticInfos);
if (browseResultCollection.Where(br => br.References.Count > 0).FirstOrDefault() == null)
{
continue;
}
String inputArgumentsNodeId = String.Empty, outputArgumentsNodeId = String.Empty;
foreach (BrowseResult br in browseResultCollection)
{
foreach (ReferenceDescription rd in br.References)
{
OpcuaNodeLink nodeLink = new OpcuaNodeLink();
nodeLink.nodeID = rd.NodeId.ToString();
nodeLink.browseName = rd.BrowseName.ToString();
if (nodeLink.browseName == "InputArguments")
{
inputArgumentsNodeId = nodeLink.nodeID;
}
else if (nodeLink.browseName == "OutputArguments")
{
outputArgumentsNodeId = nodeLink.nodeID;
}
nodeLink.parentNodeId = referenceDescription.NodeId.ToString();
nodeLink.parentNodebrowseName = referenceDescription.BrowseName.ToString();
nodeLink.referenceType = referenceType;
if (rd.IsForward)
{
opcuaNodeLink.BrowseDirection = BrowseDirection.Forward.ToString("G");
}
nodeLink.NodeClassMask = nodeClass.ToString("G");
nodeLink.browseResultMask = BrowseResultMask.All.ToString("G");
//if (!opcuaNodeStructure.IsChildPresent(referenceDescription.NodeId.ToString()))
if (opcuaNodeStructure.ChildrenNodes == null)
{
opcuaNodeStructure.ChildrenNodes = new List <OpcuaNodeLink>();
}
addNode(nodeLink);
}
}
opcuaNodeLink.isMethod = true;
BrowsePathCollection pathsToArgs = new BrowsePathCollection();
BrowsePath pathToInputArgs = new BrowsePath();
pathToInputArgs.StartingNode = methodNode.NodeId;
pathToInputArgs.RelativePath = new RelativePath(ReferenceTypeIds.HasProperty, false, true, new QualifiedName("InputArguments"));
pathsToArgs.Add(pathToInputArgs);
BrowsePath pathToOutputArgs = new BrowsePath();
pathToOutputArgs.StartingNode = methodNode.NodeId;
pathToOutputArgs.RelativePath = new RelativePath(ReferenceTypeIds.HasProperty, false, true, new QualifiedName("OutputArguments"));
pathsToArgs.Add(pathToOutputArgs);
BrowsePathResultCollection results = null;
// Get the nodeId of the input argument
ResponseHeader responseHeader = clientSession.TranslateBrowsePathsToNodeIds(
null,
pathsToArgs,
out results,
out diagnosticInfos
);
ArgumentCollection[] arguments = new ArgumentCollection[2];
for (int i = 0; i < 2; i++)
{
arguments[i] = new ArgumentCollection();
foreach (BrowsePathTarget bptarget in results[i].Targets)
{
DataValueCollection readResults = null;
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)bptarget.TargetId;
nodeToRead.AttributeId = Attributes.Value;
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
nodesToRead.Add(nodeToRead);
DiagnosticInfoCollection readDiagnoistcInfos = null;
clientSession.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out readResults,
out readDiagnoistcInfos
);
ExtensionObject[] exts = (ExtensionObject[])readResults[0].Value;
for (int j = 0; j < exts.Length; ++j)
{
ExtensionObject ext = exts[j];
arguments[i].Add((Argument)ext.Body);
OpcuaNodeLink nl = new OpcuaNodeLink();
nl.nodeID = ((Opc.Ua.Argument)ext.Body).BinaryEncodingId.ToString();
nl.browseName = ((Opc.Ua.Argument)ext.Body).Name;
if (((Opc.Ua.Argument)ext.Body).Description.Text.Equals("Input argument"))
{
nl.parentNodeId = inputArgumentsNodeId;
}
else if (((Opc.Ua.Argument)ext.Body).Description.Text.Equals("Output argument"))
{
nl.parentNodeId = outputArgumentsNodeId;
}
nl.parentNodebrowseName = referenceDescription.BrowseName.ToString();
nl.referenceType = referenceType;
if (referenceDescription.IsForward)
{
opcuaNodeLink.BrowseDirection = BrowseDirection.Forward.ToString("G");
}
nl.NodeClassMask = NodeClass.Variable.ToString("G");
nl.browseResultMask = BrowseResultMask.All.ToString("G");
nl.isArgument = true;
//if (!opcuaNodeStructure.IsChildPresent(referenceDescription.NodeId.ToString()))
if (opcuaNodeStructure.ChildrenNodes == null)
{
opcuaNodeStructure.ChildrenNodes = new List <OpcuaNodeLink>();
}
addNode(nl);
}
}
}
}
}
}
}
}
}
/// <summary>
/// Updates the EUInfo for the items.
/// </summary>
/// <param name="group">The group.</param>
/// <param name="items">The items. Null entries are ignored.</param>
public void UpdateItemEuInfo(
ComDaGroup group,
IList <ComDaGroupItem> items)
{
// get the session to use for the operation.
Session session = m_session;
if (session == null)
{
throw ComUtils.CreateComException(ResultIds.E_FAIL);
}
// build list of properties that need to be read.
BrowsePathCollection browsePaths = new BrowsePathCollection();
for (int ii = 0; ii < items.Count; ii++)
{
ComDaGroupItem item = (ComDaGroupItem)items[ii];
// ignore invalid items or items which have already checked their EU type.
if (item == null || item.EuType >= 0)
{
continue;
}
BrowsePath browsePath = new BrowsePath();
browsePath.StartingNode = item.NodeId;
RelativePathElement element = new RelativePathElement();
element.ReferenceTypeId = ReferenceTypeIds.HasProperty;
element.IsInverse = false;
element.IncludeSubtypes = false;
element.TargetName = Opc.Ua.BrowseNames.EURange;
browsePath.RelativePath.Elements.Add(element);
browsePath.Handle = item;
browsePaths.Add(browsePath);
browsePath = new BrowsePath();
browsePath.StartingNode = item.NodeId;
element = new RelativePathElement();
element.ReferenceTypeId = ReferenceTypeIds.HasProperty;
element.IsInverse = false;
element.IncludeSubtypes = false;
element.TargetName = Opc.Ua.BrowseNames.EnumStrings;
browsePath.RelativePath.Elements.Add(element);
browsePath.Handle = item;
browsePaths.Add(browsePath);
}
// check if nothing to do.
if (browsePaths.Count == 0)
{
return;
}
// translate browse paths.
BrowsePathResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
try
{
session.TranslateBrowsePathsToNodeIds(
null,
browsePaths,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, browsePaths);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, browsePaths);
}
catch (Exception)
{
for (int ii = 0; ii < browsePaths.Count; ii++)
{
ComDaGroupItem item = (ComDaGroupItem)browsePaths[ii].Handle;
item.EuType = 0;
}
return;
}
// build list of properties that need to be read.
ReadValueIdCollection propertiesToRead = new ReadValueIdCollection();
for (int ii = 0; ii < results.Count; ii++)
{
ComDaGroupItem item = (ComDaGroupItem)browsePaths[ii].Handle;
BrowsePathResult result = results[ii];
if (StatusCode.IsBad(result.StatusCode))
{
if (item.EuType < 0 && result.StatusCode == StatusCodes.BadNoMatch)
{
item.EuType = (int)OpcRcw.Da.OPCEUTYPE.OPC_NOENUM;
}
continue;
}
if (result.Targets.Count == 0 || result.Targets[0].TargetId.IsAbsolute)
{
if (item.EuType < 0)
{
item.EuType = (int)OpcRcw.Da.OPCEUTYPE.OPC_NOENUM;
}
continue;
}
ReadValueId propertyToRead = new ReadValueId();
propertyToRead.NodeId = (NodeId)result.Targets[0].TargetId;
propertyToRead.AttributeId = Attributes.Value;
propertyToRead.Handle = item;
propertiesToRead.Add(propertyToRead);
if (browsePaths[ii].RelativePath.Elements[0].TargetName.Name == Opc.Ua.BrowseNames.EURange)
{
item.EuType = (int)OpcRcw.Da.OPCEUTYPE.OPC_ANALOG;
}
else
{
item.EuType = (int)OpcRcw.Da.OPCEUTYPE.OPC_ENUMERATED;
}
}
// check if nothing to do.
if (propertiesToRead.Count == 0)
{
return;
}
// read attribute values from the server.
DataValueCollection values = null;
try
{
session.Read(
null,
0,
TimestampsToReturn.Neither,
propertiesToRead,
out values,
out diagnosticInfos);
ClientBase.ValidateResponse(values, propertiesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, propertiesToRead);
}
catch (Exception)
{
for (int ii = 0; ii < propertiesToRead.Count; ii++)
{
ComDaGroupItem item = (ComDaGroupItem)propertiesToRead[ii].Handle;
item.EuType = 0;
}
return;
}
// process results.
for (int ii = 0; ii < values.Count; ii++)
{
ComDaGroupItem item = (ComDaGroupItem)propertiesToRead[ii].Handle;
if (StatusCode.IsBad(values[ii].StatusCode))
{
item.EuType = 0;
continue;
}
if (item.EuType == (int)OpcRcw.Da.OPCEUTYPE.OPC_ANALOG)
{
Range range = (Range)values[ii].GetValue <Range>(null);
if (range == null)
{
item.EuType = 0;
continue;
}
item.EuInfo = new double[] { range.Low, range.High };
continue;
}
if (item.EuType == (int)OpcRcw.Da.OPCEUTYPE.OPC_ENUMERATED)
{
LocalizedText[] texts = (LocalizedText[])values[ii].GetValue <LocalizedText[]>(null);
if (texts == null)
{
item.EuType = 0;
continue;
}
string[] strings = new string[texts.Length];
for (int jj = 0; jj < strings.Length; jj++)
{
if (!LocalizedText.IsNullOrEmpty(texts[jj]))
{
strings[jj] = texts[jj].Text;
}
}
item.EuInfo = strings;
continue;
}
}
}
/// <summary>
/// Provides a way to move �up� or �down� in a hierarchical space from the current position, or a way to move to a specific position in the area space tree. The target szString must represent an area, rather than a source.
/// </summary>
/// <param name="dwBrowseDirection">OPCAE_BROWSE_UP, OPCAE_BROWSE_DOWN, or OPCAE_BROWSE_TO</param>
/// <param name="szString">
/// For DOWN, the partial area name of the area to move into. This would be one of the strings returned from BrowseOPCAreas.
/// For UP this parameter is ignored and should point to a NULL string.
/// For BROWSE_TO, the fully qualified area name (as obtained from GetQualifiedAreaName method) or a pointer to a NUL string to go to the root.
/// </param>
public void ChangeBrowsePosition(OPCAEBROWSEDIRECTION dwBrowseDirection, string szString)
{
lock (m_lock)
{
try
{
switch (dwBrowseDirection)
{
// move to a specified position or root.
case OPCAEBROWSEDIRECTION.OPCAE_BROWSE_TO:
{
try
{
// move to root.
if (String.IsNullOrEmpty(szString))
{
m_browseStack.Clear();
m_browseStack.Push(m_session.NodeCache.Find(Objects.Server));
break;
}
// Translate the fully qualified area name to NodeId
List <string> szAreas = new List <string>();
szAreas.Add(szString);
BrowsePathResultCollection results = m_server.GetBrowseTargets(szAreas);
if (StatusCode.IsBad(results[0].StatusCode))
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDBRANCHNAME);
}
BrowsePathTarget target = results[0].Targets[0];
INode node = m_session.NodeCache.Find(target.TargetId);
if (node == null)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDBRANCHNAME);
}
// build a new browse stack.
Stack <INode> browseStack = new Stack <INode>();
if (!FindPathToNode(node, browseStack))
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDBRANCHNAME);
}
// push target node onto stack.
browseStack.Push(node);
m_browseStack = browseStack;
}
catch
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDBRANCHNAME);
}
break;
}
// move to a child branch.
case OPCAEBROWSEDIRECTION.OPCAE_BROWSE_DOWN:
{
// check for invalid name.
if (String.IsNullOrEmpty(szString))
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDBRANCHNAME);
}
// find the current node.
INode parent = m_browseStack.Peek();
if (parent == null)
{
throw ComUtils.CreateComException(ResultIds.E_FAIL);
}
// find the child.
INode child = FindChildByName(parent.NodeId, szString);
if (child == null)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDBRANCHNAME);
}
// save the new position.
m_browseStack.Push(child);
break;
}
// move to a parent branch.
case OPCAEBROWSEDIRECTION.OPCAE_BROWSE_UP:
{
// check for invalid name.
if (!String.IsNullOrEmpty(szString))
{
throw ComUtils.CreateComException(ResultIds.E_FAIL);
}
// can't move up from root.
if (m_browseStack.Count <= 1)
{
throw ComUtils.CreateComException(ResultIds.E_FAIL);
}
// move up the stack.
m_browseStack.Pop();
break;
}
default:
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
}
}
catch (COMException e)
{
throw ComUtils.CreateComException(e);
}
catch (Exception e)
{
Utils.Trace(e, "Unexpected error in ChangeBrowsePosition");
throw ComUtils.CreateComException(e);
}
}
}
