/// <summary> /// Adds index ranges to the collection. /// </summary> private void AddIndexRanges( Node node, ReadValueIdCollection nodesToRead, params uint[] attributeIds) { if (attributeIds != null) { for (int ii = 0; ii < attributeIds.Length; ii++) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = node.NodeId; nodeToRead.AttributeId = attributeIds[ii]; nodeToRead.IndexRange = "1:2"; nodeToRead.Handle = node; nodesToRead.Add(nodeToRead); nodeToRead = new ReadValueId(); nodeToRead.NodeId = node.NodeId; nodeToRead.AttributeId = attributeIds[ii]; nodeToRead.IndexRange = "10000000:20000000"; nodeToRead.Handle = node; nodesToRead.Add(nodeToRead); } } }
/// <summary> /// Adds index ranges to the collection. /// </summary> private void AddDataEncodings( Node node, ReadValueIdCollection nodesToRead, params uint[] attributeIds) { if (attributeIds != null) { for (int ii = 0; ii < attributeIds.Length; ii++) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = node.NodeId; nodeToRead.AttributeId = attributeIds[ii]; nodeToRead.DataEncoding = BrowseNames.DefaultBinary; nodeToRead.Handle = node; nodesToRead.Add(nodeToRead); nodeToRead = new ReadValueId(); nodeToRead.NodeId = node.NodeId; nodeToRead.AttributeId = attributeIds[ii]; nodeToRead.DataEncoding = BrowseNames.DefaultXml; nodeToRead.Handle = node; nodesToRead.Add(nodeToRead); } } }
private void ReadMI_Click(object sender, EventArgs e) { try { // get the current session. Session session = Get <Session>(NodesTV.SelectedNode); if (session == null || !session.Connected) { return; } // build list of nodes to read. ReadValueIdCollection valueIds = new ReadValueIdCollection(); MonitoredItem monitoredItem = Get <MonitoredItem>(NodesTV.SelectedNode); if (monitoredItem != null) { ReadValueId valueId = new ReadValueId(); valueId.NodeId = monitoredItem.ResolvedNodeId; valueId.AttributeId = monitoredItem.AttributeId; valueId.IndexRange = monitoredItem.IndexRange; valueId.DataEncoding = monitoredItem.Encoding; valueIds.Add(valueId); } else { Subscription subscription = Get <Subscription>(NodesTV.SelectedNode); if (subscription != null) { foreach (MonitoredItem item in subscription.MonitoredItems) { ReadValueId valueId = new ReadValueId(); valueId.NodeId = item.ResolvedNodeId; valueId.AttributeId = item.AttributeId; valueId.IndexRange = item.IndexRange; valueId.DataEncoding = item.Encoding; valueIds.Add(valueId); } } } // show form. new ReadDlg().Show(session, valueIds); } catch (Exception exception) { GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception); } }
/// <summary> /// 读取一个节点的指定属性 /// </summary> /// <param name="nodeId"></param> /// <param name="attribute"></param> /// <returns></returns> private DataValue ReadNoteDataValueAttributes(NodeId nodeId, uint attribute) { NodeId sourceId = nodeId; ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = sourceId; nodeToRead.AttributeId = attribute; nodesToRead.Add(nodeToRead); int startOfProperties = nodesToRead.Count; // find all of the pror of the node. BrowseDescription nodeToBrowse1 = new BrowseDescription(); nodeToBrowse1.NodeId = sourceId; nodeToBrowse1.BrowseDirection = BrowseDirection.Forward; nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty; nodeToBrowse1.IncludeSubtypes = true; nodeToBrowse1.NodeClassMask = 0; nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All; BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection(); nodesToBrowse.Add(nodeToBrowse1); // fetch property references from the server. ReferenceDescriptionCollection references = FormUtils.Browse(CommonMethods.opcUaClient.Session, nodesToBrowse, false); if (references == null) { return(null); } for (int ii = 0; ii < references.Count; ii++) { // ignore external references. if (references[ii].NodeId.IsAbsolute) { continue; } ReadValueId nodeToRead2 = new ReadValueId(); nodeToRead2.NodeId = (NodeId)references[ii].NodeId; nodeToRead2.AttributeId = Attributes.Value; nodesToRead.Add(nodeToRead2); } // read all values. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; CommonMethods.opcUaClient.Session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); return(results[0]); }
/// <summary>读取一个节点的所有属性</summary> /// <param name="tag"></param> /// <returns></returns> //public OpcuaNodeAttribute[] ReadNoteAttributes(string tag) //{ // NodeId nodeId = new NodeId(tag); // ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); // for (uint index = 2; index <= 22U; ++index) // nodesToRead.Add(new ReadValueId() // { // NodeId = nodeId, // AttributeId = index // }); // int count = nodesToRead.Count; // BrowseDescription browseDescription = new BrowseDescription(); // browseDescription.NodeId = nodeId; // browseDescription.BrowseDirection = BrowseDirection.Forward; // browseDescription.ReferenceTypeId = ReferenceTypeIds.HasProperty; // browseDescription.IncludeSubtypes = true; // browseDescription.NodeClassMask = 0U; // browseDescription.ResultMask = 63U; // BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection(); // nodesToBrowse.Add(browseDescription); // ReferenceDescriptionCollection descriptionCollection = FormUtils.Browse(this.m_session, nodesToBrowse, false); // if (descriptionCollection == null) // return new OpcuaNodeAttribute[0]; // for (int index = 0; index < descriptionCollection.Count; ++index) // { // if (!descriptionCollection[index].NodeId.IsAbsolute) // nodesToRead.Add(new ReadValueId() // { // NodeId = (NodeId)descriptionCollection[index].NodeId, // AttributeId = 13U // }); // } // DataValueCollection results = (DataValueCollection)null; // DiagnosticInfoCollection diagnosticInfos = (DiagnosticInfoCollection)null; // this.m_session.Read((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); // ClientBase.ValidateResponse((IList)results, (IList)nodesToRead); // ClientBase.ValidateDiagnosticInfos(diagnosticInfos, (IList)nodesToRead); // List<OpcNodeAttribute> opcNodeAttributeList = new List<OpcNodeAttribute>(); // for (int index = 0; index < results.Count; ++index) // { // OpcNodeAttribute opcNodeAttribute1 = new OpcNodeAttribute(); // BuiltInType builtInType; // if (index < count) // { // if (!(results[index].StatusCode == 2150957056U)) // { // opcNodeAttribute1.Name = Attributes.GetBrowseName(nodesToRead[index].AttributeId); // if (StatusCode.IsBad(results[index].StatusCode)) // { // opcNodeAttribute1.Type = Utils.Format("{0}", (object)Attributes.GetDataTypeId(nodesToRead[index].AttributeId)); // opcNodeAttribute1.Value = (object)Utils.Format("{0}", (object)results[index].StatusCode); // } // else // { // TypeInfo typeInfo = TypeInfo.Construct(results[index].Value); // OpcNodeAttribute opcNodeAttribute2 = opcNodeAttribute1; // builtInType = typeInfo.BuiltInType; // string str = builtInType.ToString(); // opcNodeAttribute2.Type = str; // if (typeInfo.ValueRank >= 0) // opcNodeAttribute1.Type += "[]"; // opcNodeAttribute1.Value = results[index].Value; // } // } // else // continue; // } // else if (!(results[index].StatusCode == 2150891520U)) // { // opcNodeAttribute1.Name = Utils.Format("{0}", (object)descriptionCollection[index - count]); // if (StatusCode.IsBad(results[index].StatusCode)) // { // opcNodeAttribute1.Type = string.Empty; // opcNodeAttribute1.Value = (object)Utils.Format("{0}", (object)results[index].StatusCode); // } // else // { // TypeInfo typeInfo = TypeInfo.Construct(results[index].Value); // OpcNodeAttribute opcNodeAttribute2 = opcNodeAttribute1; // builtInType = typeInfo.BuiltInType; // string str = builtInType.ToString(); // opcNodeAttribute2.Type = str; // if (typeInfo.ValueRank >= 0) // opcNodeAttribute1.Type += "[]"; // opcNodeAttribute1.Value = results[index].Value; // } // } // else // continue; // opcNodeAttributeList.Add(opcNodeAttribute1); // } // return opcNodeAttributeList.ToArray(); //} /// <summary>读取一个节点的所有属性</summary> /// <param name="tag"></param> /// <returns></returns> public DataValue[] ReadNoteDataValueAttributes(string tag) { NodeId nodeId = new NodeId(tag); ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (uint index = 1; index <= 22U; ++index) { nodesToRead.Add(new ReadValueId() { NodeId = nodeId, AttributeId = index }); } int count = nodesToRead.Count; BrowseDescription browseDescription = new BrowseDescription(); browseDescription.NodeId = nodeId; browseDescription.BrowseDirection = BrowseDirection.Forward; browseDescription.ReferenceTypeId = ReferenceTypeIds.HasProperty; browseDescription.IncludeSubtypes = true; browseDescription.NodeClassMask = 0U; browseDescription.ResultMask = 63U; BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection(); nodesToBrowse.Add(browseDescription); ReferenceDescriptionCollection descriptionCollection = FormUtils.Browse(this.m_session, nodesToBrowse, false); if (descriptionCollection == null) { return(new DataValue[0]); } for (int index = 0; index < descriptionCollection.Count; ++index) { if (!descriptionCollection[index].NodeId.IsAbsolute) { nodesToRead.Add(new ReadValueId() { NodeId = (NodeId)descriptionCollection[index].NodeId, AttributeId = 13U }); } } DataValueCollection results = (DataValueCollection)null; DiagnosticInfoCollection diagnosticInfos = (DiagnosticInfoCollection)null; this.m_session.Read((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse((IList)results, (IList)nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, (IList)nodesToRead); return(results.ToArray()); }
/// <summary> /// 0:NodeClass 1:Value 2:AccessLevel 3:DisplayName 4:Description /// </summary> /// <param name="nodeIds"></param> /// <returns></returns> private DataValue[] ReadOneNodeFiveAttributes(List <NodeId> nodeIds) { ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (var nodeId in nodeIds) { NodeId sourceId = nodeId; nodesToRead.Add(new ReadValueId() { NodeId = sourceId, AttributeId = Attributes.NodeClass }); nodesToRead.Add(new ReadValueId() { NodeId = sourceId, AttributeId = Attributes.Value }); nodesToRead.Add(new ReadValueId() { NodeId = sourceId, AttributeId = Attributes.AccessLevel }); nodesToRead.Add(new ReadValueId() { NodeId = sourceId, AttributeId = Attributes.DisplayName }); nodesToRead.Add(new ReadValueId() { NodeId = sourceId, AttributeId = Attributes.Description }); } // read all values. m_OpcUaClient.Session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out DataValueCollection results, out DiagnosticInfoCollection diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); return(results.ToArray()); }
private DataValueCollection Read_Value(string node) { //Read variables in the server’s address space ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = node; nodeToRead.AttributeId = Attributes.Value; nodesToRead.Add(nodeToRead); DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); return(results); }
/// <summary> /// read specified node data from server /// <summary> private object Read_Node(NodeId nodeid) { DataValueCollection results; DiagnosticInfoCollection diagnosticInfos; ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); ReadValueId valueToRead = new ReadValueId(); valueToRead.NodeId = nodeid; valueToRead.AttributeId = Attributes.Value; valuesToRead.Add(valueToRead); m_design_session.Read( null, 0, TimestampsToReturn.Neither, valuesToRead, out results, out diagnosticInfos); object val = results.Last().Value; string message_value = String.Format("Read from node: '{0}'({1}) = '{2}'", "", nodeid.ToString(), val); if (!StatusCode.IsGood(results.Last().StatusCode)) { string message_status = String.Format("Error! Read from node ({0}) status code: {1}", nodeid.ToString(), results.Last().StatusCode); Debug.WriteLine(message_status); } return(val); }
private void ReadMI_Click(object sender, EventArgs e) { try { if (NodesTV.SelectedNode == null) { return; } ReferenceDescription reference = NodesTV.SelectedNode.Tag as ReferenceDescription; if (reference == null || (reference.NodeClass & (NodeClass.Variable | NodeClass.VariableType)) == 0) { return; } Session session = m_browser.Session; // build list of nodes to read. ReadValueIdCollection valueIds = new ReadValueIdCollection(); ReadValueId valueId = new ReadValueId(); valueId.NodeId = (NodeId)reference.NodeId; valueId.AttributeId = Attributes.Value; valueId.IndexRange = null; valueId.DataEncoding = null; valueIds.Add(valueId); // show form. new ReadDlg().Show(session, valueIds); } catch (Exception exception) { GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception); } }
/// <summary>read several value nodes from server</summary> /// <param name="Tags">all Tags</param> /// <returns></returns> public IEnumerable <DataValue> ReadNodes(string[] Tags) { ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (int i = 0; i < Tags.Length; ++i) { nodesToRead.Add(new ReadValueId() { NodeId = new NodeId(Tags[i]), AttributeId = 13U }); } DataValueCollection results; DiagnosticInfoCollection diagnosticInfos; this.m_session.Read((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse((IList)results, (IList)nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, (IList)nodesToRead); foreach (DataValue dataValue in (List <DataValue>)results) { DataValue v = dataValue; yield return(v); v = (DataValue)null; } List <DataValue> .Enumerator enumerator = new List <DataValue> .Enumerator(); }
/// <summary>Read a tag asynchronously</summary> /// <typeparam name="T">The type of tag to read</typeparam> /// <param name="tag">The fully-qualified identifier of the tag. You can specify a subfolder by using a comma delimited name. /// E.g: the tag `foo.bar` reads the tag `bar` on the folder `foo`</param> /// <returns>The value retrieved from the OPC</returns> public Task <T> ReadNodeAsync <T>(string tag) { ReadValueIdCollection valueIdCollection = new ReadValueIdCollection(); valueIdCollection.Add(new ReadValueId() { NodeId = new NodeId(tag), AttributeId = 13U }); ReadValueIdCollection nodesToRead = valueIdCollection; TaskCompletionSource <T> taskCompletionSource = new TaskCompletionSource <T>(); this.m_session.BeginRead((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, (AsyncCallback)(ar => { DataValueCollection results; DiagnosticInfoCollection diagnosticInfos; ResponseHeader responseHeader = this.m_session.EndRead(ar, out results, out diagnosticInfos); try { this.CheckReturnValue(responseHeader.ServiceResult); this.CheckReturnValue(results[0].StatusCode); taskCompletionSource.TrySetResult((T)results[0].Value); } catch (Exception ex) { taskCompletionSource.TrySetException(ex); } }), (object)null); return(taskCompletionSource.Task); }
/// <summary> /// Gets the supported key formats. /// </summary> /// <param name="publicKeyFormats">The public key formats.</param> /// <param name="privateKeyFormats">The private key formats.</param> /// <exception cref="System.InvalidOperationException">Connection to server is not active.</exception> public string[] GetSupportedKeyFormats() { if (!IsConnected) { Connect(); } ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); nodesToRead.Add(new ReadValueId() { NodeId = ExpandedNodeId.ToNodeId(Opc.Ua.VariableIds.ServerConfiguration_SupportedPrivateKeyFormats, m_session.NamespaceUris), AttributeId = Attributes.Value }); DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); return(results[0].GetValue <string[]>(null)); }
/// <summary> /// read several value nodes from server /// </summary> /// <param name="tags">所以的节点数组信息</param> /// <returns>all values</returns> public List <T> ReadNodes <T>(string[] tags) { List <T> result = new List <T>( ); ReadValueIdCollection nodesToRead = new ReadValueIdCollection( ); for (int i = 0; i < tags.Length; i++) { nodesToRead.Add(new ReadValueId( ) { NodeId = new NodeId(tags[i]), AttributeId = Attributes.Value }); } // 读取当前的值 m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out DataValueCollection results, out DiagnosticInfoCollection diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); foreach (var item in results) { result.Add((T)item.Value); } return(result); }
/// <summary> /// read several value nodes from server /// </summary> /// <param name="nodeIds">all NodeIds</param> /// <returns>all values</returns> public List <DataValue> ReadNodes(NodeId[] nodeIds) { ReadValueIdCollection nodesToRead = new ReadValueIdCollection( ); for (int i = 0; i < nodeIds.Length; i++) { nodesToRead.Add(new ReadValueId( ) { NodeId = nodeIds[i], AttributeId = Attributes.Value }); } // 读取当前的值 m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out DataValueCollection results, out DiagnosticInfoCollection diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); return(results.ToList( )); }
private void retriveNodeIdDataType(ref List <CommandActions> commandActionList) { ReadValueIdCollection nodesForRead = new ReadValueIdCollection(); foreach (var msgCmd in commandActionList) { foreach (var action in msgCmd.actions) { ReadValueId nofeForRead = new ReadValueId(); nofeForRead.AttributeId = Attributes.Value; nofeForRead.NodeId = action.nodeId; nodesForRead.Add(nofeForRead); } } DataValueCollection dataValueList = _uaClient.Read(nodesForRead); int index = 0; foreach (var msgCmd in commandActionList) { foreach (var action in msgCmd.actions) { if (dataValueList[index] != null) { action.dataType = dataValueList[index].WrappedValue.TypeInfo.BuiltInType; } index++; } } }
/// <summary> /// Reads the value through the passed in session from a remote server. /// </summary> /// <param name="session"></param> /// <param name="requestHeader"></param> /// <param name="operations"></param> /// <param name="skipAttributeIdInvalid"></param> /// <param name="traceOnly"></param> /// <returns></returns> public async Task <DataValue> ReadValueAsync(Session session, RequestHeader requestHeader, List <OperationResultModel> operations, bool skipAttributeIdInvalid, bool traceOnly) { var readValueCollection = new ReadValueIdCollection { new ReadValueId { NodeId = LocalId, AttributeId = Attributes.Value } }; if (NodeClass == NodeClass.Unspecified) { readValueCollection.Add(new ReadValueId { NodeId = LocalId, AttributeId = Attributes.NodeClass }); } // Update value await ReadAsync(session, requestHeader, readValueCollection, operations, skipAttributeIdInvalid, traceOnly); if (operations == null && NodeClass != NodeClass.VariableType && NodeClass != NodeClass.Variable) { throw new InvalidOperationException( "Node is not a variable or variable type node and does not have value"); } return(_attributes[Attributes.Value]); }
public string VariableRead(string node) { try { DataValueCollection values = null; DiagnosticInfoCollection diagnosticInfos = null; ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); ReadValueId valueId = new ReadValueId(); valueId.NodeId = new NodeId(node); valueId.AttributeId = Attributes.Value; valueId.IndexRange = null; valueId.DataEncoding = null; nodesToRead.Add(valueId); ResponseHeader responseHeader = session.Read(null, 0, TimestampsToReturn.Both, nodesToRead, out values, out diagnosticInfos); string value = ""; if (values[0].Value != null) { var rawValue = values[0].WrappedValue.ToString(); value = rawValue.Replace("|", "\r\n").Replace("{", "").Replace("}", ""); } return(value); } catch { return(null); } }
/// <summary> /// read several value nodes from server /// </summary> /// <param name="Tags">all Tags</param> /// <returns></returns> public IEnumerable <DataValue> ReadNodes(string[] Tags) { ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (int i = 0; i < Tags.Length; i++) { nodesToRead.Add(new ReadValueId() { NodeId = new NodeId(Tags[i]), AttributeId = Attributes.Value }); } // 读取当前的值 m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out DataValueCollection results, out DiagnosticInfoCollection diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); foreach (var v in results) { yield return(v); } }
public async Task <ActionResult> VariableWriteFetch(string jstreeNode) { string[] delimiter = { "__$__" }; string[] jstreeNodeSplit = jstreeNode.Split(delimiter, 3, StringSplitOptions.None); string node; var actionResult = ""; if (jstreeNodeSplit.Length == 1) { node = jstreeNodeSplit[0]; } else { node = jstreeNodeSplit[1]; } bool retry = true; while (true) { try { DataValueCollection values = null; DiagnosticInfoCollection diagnosticInfos = null; ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); ReadValueId valueId = new ReadValueId(); valueId.NodeId = new NodeId(node); valueId.AttributeId = Attributes.Value; valueId.IndexRange = null; valueId.DataEncoding = null; nodesToRead.Add(valueId); Session session = await OpcSessionHelper.Instance.GetSessionAsync(Session.SessionID, (string)Session["EndpointUrl"]); ResponseHeader responseHeader = session.Read(null, 0, TimestampsToReturn.Both, nodesToRead, out values, out diagnosticInfos); if (values[0].Value != null) { if (values[0].WrappedValue.ToString().Length > 30) { actionResult = values[0].WrappedValue.ToString().Substring(0, 30); actionResult += "..."; } else { actionResult = values[0].WrappedValue.ToString(); } } return(Content(actionResult)); } catch (Exception exception) { if (!retry) { return(Content(CreateOpcExceptionActionString(exception))); } retry = false; } } }
/// <summary> /// Reads the application description from the GDS. /// </summary> private ApplicationDescription Read(NodeId nodeId) { NamespaceTable wellKnownNamespaceUris = new NamespaceTable(); wellKnownNamespaceUris.Append(Namespaces.OpcUaGds); string[] browsePaths = new string[] { "1:ApplicationName", "1:ApplicationType", "1:ApplicationUri", "1:ProductUri", "1:GatewayServerUri", "1:DiscoveryUrls" }; List <NodeId> propertyIds = ClientUtils.TranslateBrowsePaths( ServerCTRL.Session, nodeId, wellKnownNamespaceUris, browsePaths); ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (NodeId propertyId in propertyIds) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = propertyId; nodeToRead.AttributeId = Attributes.Value; nodesToRead.Add(nodeToRead); } DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; ServerCTRL.Session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); ApplicationDescription application = new ApplicationDescription(); application.ApplicationName = results[0].GetValue <LocalizedText>(null); application.ApplicationType = (ApplicationType)results[1].GetValue <int>((int)ApplicationType.Server); application.ApplicationUri = results[2].GetValue <string>(null); application.ProductUri = results[3].GetValue <string>(null); application.GatewayServerUri = results[4].GetValue <string>(null); string[] discoveryUrls = results[5].GetValue <string[]>(null); if (discoveryUrls != null) { application.DiscoveryUrls = new StringCollection(discoveryUrls); } return(application); }
/// <summary> /// Reads the attributes for the node. /// </summary> public Dictionary <string, string> ReadAttributes(NodeId nodeId) { Dictionary <string, string> re = new Dictionary <string, string>(); if (NodeId.IsNull(nodeId)) { return(re); } // build list of attributes to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (uint attributeId in Attributes.GetIdentifiers()) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = nodeId; nodeToRead.AttributeId = attributeId; nodesToRead.Add(nodeToRead); } // read the attributes. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // add the results to the display. for (int ii = 0; ii < results.Count; ii++) { // check for error. if (StatusCode.IsBad(results[ii].StatusCode)) { if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid) { continue; } } // add the metadata for the attribute. uint attributeId = nodesToRead[ii].AttributeId; string skey = Attributes.GetBrowseName(attributeId); string sval = GetAttributeDisplayText(m_session, attributeId, results[ii].WrappedValue); re.Add(skey, sval); } return(re); }
/// <summary> /// Adds the attributes to the control. /// </summary> private void AddAttributes() { // build list of attributes to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (uint attributeId in Attributes.GetIdentifiers()) { ReadValueId valueId = new ReadValueId(); valueId.NodeId = m_nodeId; valueId.AttributeId = attributeId; valueId.IndexRange = null; valueId.DataEncoding = null; nodesToRead.Add(valueId); } // read attributes. DataValueCollection values; DiagnosticInfoCollection diagnosticInfos; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out values, out diagnosticInfos); ClientBase.ValidateResponse(values, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // update control. for (int ii = 0; ii < nodesToRead.Count; ii++) { // check if node supports attribute. if (values[ii].StatusCode == StatusCodes.BadAttributeIdInvalid) { continue; } NodeField field = new NodeField(); field.ValueId = nodesToRead[ii]; field.Name = Attributes.GetBrowseName(nodesToRead[ii].AttributeId); field.Value = values[ii].Value; field.StatusCode = values[ii].StatusCode; if (diagnosticInfos != null && diagnosticInfos.Count > ii) { field.DiagnosticInfo = diagnosticInfos[ii]; } AddItem(field, "SimpleItem", -1); } }
/// <summary> /// Add attribute for a particular node to ReadValueCollection /// </summary> /// <param name="node"></param> /// <param name="attributeId"></param> /// <param name="nodesToRead"></param> private void addAttribute(NodeId node, uint attributeId, ReadValueIdCollection nodesToRead) { // Get NodeId from tree node . ReadValueId attributeToRead = new ReadValueId(); attributeToRead.NodeId = node; attributeToRead.AttributeId = attributeId; attributeToRead.UserData = Attributes.GetDisplayText(attributeId); nodesToRead.Add(attributeToRead); }
/// <summary> /// Add attribute for a particular node to ReadValueCollection /// </summary> /// <param name="node"></param> /// <param name="attributeId"></param> /// <param name="nodesToRead"></param> private void addAttribute(NodeId node, uint attributeId, ReadValueIdCollection nodesToRead) { // Get NodeId from tree node . ReadValueId attributeToRead = new ReadValueId(); attributeToRead.NodeId = node; attributeToRead.AttributeId = attributeId; attributeToRead.Handle = m_Server.attributeIdToString(attributeId); nodesToRead.Add(attributeToRead); }
public LuaTable read(LuaTable ids) { var key = "__opcua__tmp"; lua.NewTable(key); var tmp = lua[key] as LuaTable; lua[key] = null; if (this.session == null) { return(tmp); } var items = new ReadValueIdCollection(); foreach (var k in ids.Keys) { var id = ids[k].ToString(); if (string.IsNullOrEmpty(id)) { continue; } items.Add(new ReadValueId() { NodeId = new NodeId(id), AttributeId = Attributes.Value, IndexRange = null, DataEncoding = null, }); } var results = new DataValueCollection(); var diagnosticInfos = new DiagnosticInfoCollection(); this.session.Read( null, 0, TimestampsToReturn.Both, items, out results, out diagnosticInfos ); for (int i = 0; i < items.Count; i++) { var id = items[i].NodeId.ToString(); var value = results[i].Value; tmp[id] = value; } return(tmp); }
/// <summary> /// Read Values of NodeIds, determine types, write back new random values. /// </summary> /// <param name="testSet">The nodeIds to modify.</param> private void UpdateValues(NodeId[] testSet) { // Read values var requestHeader = m_requestHeader; var nodesToRead = new ReadValueIdCollection(); foreach (NodeId nodeId in testSet) { nodesToRead.Add(new ReadValueId() { NodeId = nodeId, AttributeId = Attributes.Value }); } var response = m_server.Read(requestHeader, kMaxAge, TimestampsToReturn.Neither, nodesToRead, out var readDataValues, out var diagnosticInfos); ServerFixtureUtils.ValidateResponse(response); ServerFixtureUtils.ValidateDiagnosticInfos(diagnosticInfos, readDataValues); Assert.AreEqual(testSet.Length, readDataValues.Count); var modifiedValues = new DataValueCollection(); foreach (var dataValue in readDataValues) { var typeInfo = TypeInfo.Construct(dataValue.Value); Assert.IsNotNull(typeInfo); var value = m_generator.GetRandom(typeInfo.BuiltInType); modifiedValues.Add(new DataValue() { WrappedValue = new Variant(value) }); } int ii = 0; var nodesToWrite = new WriteValueCollection(); foreach (NodeId nodeId in testSet) { nodesToWrite.Add(new WriteValue() { NodeId = nodeId, AttributeId = Attributes.Value, Value = modifiedValues[ii] }); ii++; } // Write Nodes requestHeader.Timestamp = DateTime.UtcNow; response = m_server.Write(requestHeader, nodesToWrite, out var writeDataValues, out diagnosticInfos); ServerFixtureUtils.ValidateResponse(response); ServerFixtureUtils.ValidateDiagnosticInfos(diagnosticInfos, writeDataValues); }
/// <summary> /// Handles a read request. /// </summary> public List <ServiceResult> Read(List <ReadRequest> requests) { if (m_session == null) { throw new ServiceResultException(StatusCodes.BadCommunicationError); } ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < requests.Count; ii++) { ReadValueId valueToRead = new ReadValueId(); valueToRead.NodeId = ExpandedNodeId.ToNodeId(requests[ii].RemoteId, m_session.NamespaceUris); valueToRead.AttributeId = requests[ii].ReadValueId.AttributeId; valueToRead.IndexRange = requests[ii].ReadValueId.IndexRange; valueToRead.DataEncoding = requests[ii].ReadValueId.DataEncoding; valuesToRead.Add(valueToRead); } DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = m_session.Read( null, 0, TimestampsToReturn.Both, valuesToRead, out results, out diagnosticInfos); Session.ValidateResponse(results, valuesToRead); Session.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead); List <ServiceResult> errors = new List <ServiceResult>(); for (int ii = 0; ii < requests.Count; ii++) { requests[ii].Value = results[ii]; if (results[ii].StatusCode != StatusCodes.Good) { errors.Add(new ServiceResult(results[ii].StatusCode, ii, diagnosticInfos, responseHeader.StringTable)); } else { errors.Add(null); } } return(errors); }
/// <summary> /// Reads the values for a set of variables. /// </summary> static void Read(Session session) { IList <NodeOfInterest> results = GetNodeIds(session, Opc.Ua.Objects.ObjectsFolder, VariableBrowsePaths.ToArray()); // build list of nodes to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < results.Count; ii++) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = results[ii].NodeId; nodeToRead.AttributeId = Attributes.Value; nodesToRead.Add(nodeToRead); } // read values. DataValueCollection values; DiagnosticInfoCollection diagnosticInfos; ResponseHeader responseHeader = session.Read( null, 0, TimestampsToReturn.Both, nodesToRead, out values, out diagnosticInfos); // verify that the server returned the correct number of results. Session.ValidateResponse(values, nodesToRead); Session.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // process results. for (int ii = 0; ii < values.Count; ii++) { // check for error. if (StatusCode.IsBad(values[ii].StatusCode)) { ServiceResult result = Session.GetResult(values[ii].StatusCode, ii, diagnosticInfos, responseHeader); Console.WriteLine("Read result for {0}: {1}", VariableBrowsePaths[ii], result.ToLongString()); continue; } // write value. Console.WriteLine("{0}: V={1}, Q={2}, SrvT={3}, SrcT={4}", nodesToRead[ii].NodeId, values[ii].Value.ToString(), values[ii].StatusCode.ToString(), values[ii].ServerTimestamp, values[ii].SourceTimestamp); } }
/// <summary> /// Samples the values of the items. /// </summary> private void DoSample(object state) { try { List <ISampledDataChangeMonitoredItem> items = state as List <ISampledDataChangeMonitoredItem>; // read values for all enabled items. if (items != null && items.Count > 0) { ReadValueIdCollection itemsToRead = new ReadValueIdCollection(items.Count); DataValueCollection values = new DataValueCollection(items.Count); List <ServiceResult> errors = new List <ServiceResult>(items.Count); // allocate space for results. for (int ii = 0; ii < items.Count; ii++) { ReadValueId readValueId = items[ii].GetReadValueId(); readValueId.Processed = false; itemsToRead.Add(readValueId); values.Add(null); errors.Add(null); } OperationContext context = new OperationContext(m_session, m_diagnosticsMask); // read values. m_nodeManager.Read( context, 0, itemsToRead, values, errors); // update monitored items. for (int ii = 0; ii < items.Count; ii++) { if (values[ii] == null) { values[ii] = new DataValue(StatusCodes.BadInternalError, DateTime.UtcNow); } items[ii].QueueValue(values[ii], errors[ii]); } } } catch (Exception e) { Utils.Trace(e, "Server: Unexpected error sampling values."); } }
private static ReadValueIdCollection CreateReadValueIdCollection(IEnumerable <DataItem> OPCItems) { ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (DataItem di in OPCItems) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = di.Tag; nodeToRead.AttributeId = Attributes.Value; nodesToRead.Add(nodeToRead); } return(nodesToRead); }
/// <summary> /// Prompts the user to enter a value to write. /// </summary> /// <param name="session">The session to use.</param> /// <param name="nodeId">The identifier for the node to write to.</param> /// <param name="attributeId">The attribute being written.</param> /// <returns>True if successful. False if the operation was cancelled.</returns> public bool ShowDialog(Session session, NodeId nodeId, uint attributeId) { m_session = session; m_nodeId = nodeId; m_attributeId = attributeId; ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = nodeId; nodeToRead.AttributeId = attributeId; ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); nodesToRead.Add(nodeToRead); // read current value. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); m_value = results[0]; ValueTB.Text = Utils.Format("{0}", m_value.WrappedValue); // display the dialog. if (ShowDialog() != DialogResult.OK) { return false; } return true; }
/// <summary> /// Updates the aggregate descriptions. /// </summary> /// <param name="session">The session.</param> /// <param name="aggregates">The aggregates.</param> private void UpdateAggregateDescriptions(Session session, List<HdaAggregate> aggregates) { ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); ; for (int ii = 0; ii < aggregates.Count; ii++) { HdaAggregate aggregate = aggregates[ii]; ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = aggregate.RemoteId; nodeToRead.AttributeId = Attributes.Description; nodesToRead.Add(nodeToRead); } DataValueCollection values = null; DiagnosticInfoCollection diagnosticInfos = null; // read values from the UA server. ResponseHeader responseHeader = session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out values, out diagnosticInfos); // validate response from the UA server. ClientBase.ValidateResponse(values, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); for (int ii = 0; ii < aggregates.Count; ii++) { HdaAggregate aggregate = aggregates[ii]; if (StatusCode.IsBad(values[ii].StatusCode)) { aggregate.Description = null; continue; } aggregate.Description = values[ii].WrappedValue.ToString(); } }
/// <summary> /// Reads the values for a set of variables. /// </summary> static void Read(Session session) { IList<NodeOfInterest> results = GetNodeIds(session, Opc.Ua.Objects.ObjectsFolder, VariableBrowsePaths.ToArray()); // build list of nodes to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < results.Count; ii++) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = results[ii].NodeId; nodeToRead.AttributeId = Attributes.Value; nodesToRead.Add(nodeToRead); } // read values. DataValueCollection values; DiagnosticInfoCollection diagnosticInfos; ResponseHeader responseHeader = session.Read( null, 0, TimestampsToReturn.Both, nodesToRead, out values, out diagnosticInfos); // verify that the server returned the correct number of results. Session.ValidateResponse(values, nodesToRead); Session.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // process results. for (int ii = 0; ii < values.Count; ii++) { // check for error. if (StatusCode.IsBad(values[ii].StatusCode)) { ServiceResult result = Session.GetResult(values[ii].StatusCode, ii, diagnosticInfos, responseHeader); Console.WriteLine("Read result for {0}: {1}", VariableBrowsePaths[ii], result.ToLongString()); continue; } // write value. Console.WriteLine( "{0}: V={1}, Q={2}, SrvT={3}, SrcT={4}",nodesToRead[ii].NodeId, values[ii].Value.ToString(), values[ii].StatusCode.ToString(), values[ii].ServerTimestamp, values[ii].SourceTimestamp); } }
private void RefreshBTN_Click(object sender, EventArgs e) { try { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = m_variableId; nodeToRead.AttributeId = Attributes.Value; nodeToRead.DataEncoding = m_encodingName; ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); nodesToRead.Add(nodeToRead); // read the attributes. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // check for error. if (StatusCode.IsBad(results[0].StatusCode)) { ValueTB.Text = results[0].StatusCode.ToString(); ValueTB.ForeColor = Color.Red; ValueTB.Font = new Font(ValueTB.Font, FontStyle.Bold); return; } SetValue(results[0].WrappedValue); } catch (Exception exception) { ClientUtils.HandleException(this.Text, exception); } }
/// <summary> /// Reads the log file path. /// </summary> private void ReadLogFilePath() { if (m_session == null) { return; } try { // want to get error text for this call. m_session.ReturnDiagnostics = DiagnosticsMasks.All; ReadValueId value = new ReadValueId(); value.NodeId = m_logFileNodeId; value.AttributeId = Attributes.Value; ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); valuesToRead.Add(value); DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = m_session.Read( null, 0, TimestampsToReturn.Neither, valuesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, valuesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead); if (StatusCode.IsBad(results[0].StatusCode)) { throw ServiceResultException.Create(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable); } LogFilePathTB.Text = results[0].GetValue<string>(""); } catch (Exception exception) { ClientUtils.HandleException(this.Text, exception); } finally { m_session.ReturnDiagnostics = DiagnosticsMasks.None; } }
/// <summary> /// Finds the targets for the specified reference. /// </summary> private static void UpdateInstanceDescriptions(Session session, List<InstanceDeclaration> instances, bool throwOnError) { try { ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < instances.Count; ii++) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = instances[ii].NodeId; nodeToRead.AttributeId = Attributes.Description; nodesToRead.Add(nodeToRead); nodeToRead = new ReadValueId(); nodeToRead.NodeId = instances[ii].NodeId; nodeToRead.AttributeId = Attributes.DataType; nodesToRead.Add(nodeToRead); nodeToRead = new ReadValueId(); nodeToRead.NodeId = instances[ii].NodeId; nodeToRead.AttributeId = Attributes.ValueRank; nodesToRead.Add(nodeToRead); } // start the browse operation. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // update the instances. for (int ii = 0; ii < nodesToRead.Count; ii += 3) { InstanceDeclaration instance = instances[ii / 3]; instance.Description = results[ii].GetValue<LocalizedText>(LocalizedText.Null).Text; instance.DataType = results[ii + 1].GetValue<NodeId>(NodeId.Null); instance.ValueRank = results[ii + 2].GetValue<int>(ValueRanks.Any); if (!NodeId.IsNull(instance.DataType)) { instance.BuiltInType = DataTypes.GetBuiltInType(instance.DataType, session.TypeTree); instance.DataTypeDisplayText = session.NodeCache.GetDisplayText(instance.DataType); if (instance.ValueRank >= 0) { instance.DataTypeDisplayText += "[]"; } } } } catch (Exception exception) { if (throwOnError) { throw new ServiceResultException(exception, StatusCodes.BadUnexpectedError); } } }
/// <summary> /// Updates the local copy of the server's namespace uri and server uri tables. /// </summary> public void FetchNamespaceTables() { ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); // request namespace array. ReadValueId valueId = new ReadValueId(); valueId.NodeId = Variables.Server_NamespaceArray; valueId.AttributeId = Attributes.Value; nodesToRead.Add(valueId); // request server array. valueId = new ReadValueId(); valueId.NodeId = Variables.Server_ServerArray; valueId.AttributeId = Attributes.Value; nodesToRead.Add(valueId); // read from server. DataValueCollection values = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = this.Read( null, 0, TimestampsToReturn.Both, nodesToRead, out values, out diagnosticInfos); ValidateResponse(values, nodesToRead); ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // validate namespace array. ServiceResult result = ValidateDataValue(values[0], typeof(string[]), 0, diagnosticInfos, responseHeader); if (ServiceResult.IsBad(result)) { throw new ServiceResultException(result); } m_namespaceUris.Update((string[])values[0].Value); // validate server array. result = ValidateDataValue(values[1], typeof(string[]), 1, diagnosticInfos, responseHeader); if (ServiceResult.IsBad(result)) { throw new ServiceResultException(result); } m_serverUris.Update((string[])values[1].Value); }
/// <summary> /// Handles the AfterSelect event of the BrowseTV control. /// </summary> /// <param name="sender">The source of the event.</param> /// <param name="e">The <see cref="System.Windows.Forms.TreeViewEventArgs"/> instance containing the event data.</param> private void BrowseTV_AfterSelect(object sender, TreeViewEventArgs e) { try { EventFieldsLV.Items.Clear(); FilterDefinition filter = m_newFilter = new FilterDefinition(); filter.EventTypeId = null; filter.Fields = new List<FilterDefinitionField>(); if (e.Node == null) { OkBTN.Enabled = false; return; } OkBTN.Enabled = true; // get the currently selected event. NodeId eventTypeId = Opc.Ua.ObjectTypeIds.BaseEventType; ReferenceDescription reference = e.Node.Tag as ReferenceDescription; if (reference != null) { eventTypeId = (NodeId)reference.NodeId; } filter.EventTypeId = eventTypeId; // collect all of the fields defined for the event. SimpleAttributeOperandCollection fields = new SimpleAttributeOperandCollection(); List<NodeId> declarationIds = new List<NodeId>(); FormUtils.CollectFieldsForType(m_session, eventTypeId, fields, declarationIds); // need to read the description and datatype for each field. ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < declarationIds.Count; ii++) { ReadValueId valueToRead = new ReadValueId(); valueToRead.NodeId = declarationIds[ii]; valueToRead.AttributeId = Attributes.Description; valuesToRead.Add(valueToRead); valueToRead = new ReadValueId(); valueToRead.NodeId = declarationIds[ii]; valueToRead.AttributeId = Attributes.DataType; valuesToRead.Add(valueToRead); valueToRead = new ReadValueId(); valueToRead.NodeId = declarationIds[ii]; valueToRead.AttributeId = Attributes.ValueRank; valuesToRead.Add(valueToRead); } DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, valuesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, valuesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead); // collect values. ignore errors since data used for display only. List<LocalizedText> descriptions = new List<LocalizedText>(); List<NodeId> datatypes = new List<NodeId>(); List<int> valueRanks = new List<int>(); for (int ii = 0; ii < declarationIds.Count*3; ii += 3) { descriptions.Add(results[ii].GetValue<LocalizedText>(LocalizedText.Null)); datatypes.Add(results[ii+1].GetValue<NodeId>(NodeId.Null)); valueRanks.Add(results[ii+2].GetValue<int>(ValueRanks.Any)); } // populate the list box. for (int ii = 0; ii < fields.Count; ii++) { FilterDefinitionField field = new FilterDefinitionField(); filter.Fields.Add(field); field.Operand = fields[ii]; StringBuilder displayName = new StringBuilder(); for (int jj = 0; jj < field.Operand.BrowsePath.Count; jj++) { if (displayName.Length > 0) { displayName.Append('/'); } displayName.Append(field.Operand.BrowsePath[jj].Name); } field.DisplayName = displayName.ToString(); field.DataType = datatypes[ii]; field.ValueRank = valueRanks[ii]; field.BuiltInType = DataTypes.GetBuiltInType(field.DataType, m_session.TypeTree); field.Description = descriptions[ii].ToString(); // preserve previous settings. for (int jj = 0; jj < m_filter.Fields.Count; jj++) { if (m_filter.Fields[jj].DisplayName == field.DisplayName) { field.ShowColumn = m_filter.Fields[jj].ShowColumn; field.FilterValue = m_filter.Fields[jj].FilterValue; break; } } ListViewItem item = new ListViewItem(field.DisplayName); item.SubItems.Add(String.Empty); item.SubItems.Add(String.Empty); item.Checked = field.ShowColumn; item.Tag = field; INode dataType = m_session.NodeCache.Find(datatypes[ii]); if (dataType != null) { displayName = new StringBuilder(); displayName.Append(dataType.ToString()); if (valueRanks[ii] >= 0) { displayName.Append("[]"); } field.DataTypeDisplayName = displayName.ToString(); item.SubItems[1].Text = field.DataTypeDisplayName; } item.SubItems[2].Text = descriptions[ii].ToString(); EventFieldsLV.Items.Add(item); } // resize columns to fit text. for (int ii = 0; ii < EventFieldsLV.Columns.Count; ii++) { EventFieldsLV.Columns[ii].Width = -2; } } catch (Exception exception) { MessageBox.Show(exception.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error); } }
/// <summary> /// Updates the values from the server. /// </summary> private void UpdateValues() { ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); foreach (ListViewItem item in ItemsLV.Items) { ItemInfo info = item.Tag as ItemInfo; if (info == null) { continue; } ReadValueId valueToRead = new ReadValueId(); valueToRead.NodeId = info.NodeId; valueToRead.AttributeId = info.AttributeId; valueToRead.Handle = item; valuesToRead.Add(valueToRead); } DataValueCollection results; DiagnosticInfoCollection diagnosticInfos; m_session.Read( null, 0, TimestampsToReturn.Neither, valuesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, valuesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead); for (int ii = 0; ii < valuesToRead.Count; ii++) { ListViewItem item = (ListViewItem)valuesToRead[ii].Handle; ItemInfo info = (ItemInfo)item.Tag; info.Value = results[ii]; UpdateItem(item, info); } AdjustColumns(); }
/// <summary> /// Reads the arguments for the method. /// </summary> private void ReadArguments(NodeId nodeId) { m_inputArguments = null; m_outputArguments = null; // build list of references to browse. BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection(); BrowseDescription nodeToBrowse = new BrowseDescription(); nodeToBrowse.NodeId = nodeId; nodeToBrowse.BrowseDirection = BrowseDirection.Forward; nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty; nodeToBrowse.IncludeSubtypes = true; nodeToBrowse.NodeClassMask = (uint)NodeClass.Variable; nodeToBrowse.ResultMask = (uint)BrowseResultMask.BrowseName; nodesToBrowse.Add(nodeToBrowse); // find properties. ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, null, nodesToBrowse, false); // build list of properties to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (int ii = 0; references != null && ii < references.Count; ii++) { ReferenceDescription reference = references[ii]; // ignore out of server references. if (reference.NodeId.IsAbsolute) { continue; } // ignore other properties. if (reference.BrowseName != Opc.Ua.BrowseNames.InputArguments && reference.BrowseName != Opc.Ua.BrowseNames.OutputArguments) { continue; } ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = (NodeId)reference.NodeId; nodeToRead.AttributeId = Attributes.Value; nodeToRead.Handle = reference; nodesToRead.Add(nodeToRead); } // method has no arguments. if (nodesToRead.Count == 0) { return; } // read the arguments. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // save the results. for (int ii = 0; ii < results.Count; ii++) { ReferenceDescription reference = (ReferenceDescription)nodesToRead[ii].Handle; if (StatusCode.IsGood(results[ii].StatusCode)) { if (reference.BrowseName == Opc.Ua.BrowseNames.InputArguments) { m_inputArguments = (Argument[])ExtensionObject.ToArray(results[ii].GetValue<ExtensionObject[]>(null), typeof(Argument)); } if (reference.BrowseName == Opc.Ua.BrowseNames.OutputArguments) { m_outputArguments = (Argument[])ExtensionObject.ToArray(results[ii].GetValue<ExtensionObject[]>(null), typeof(Argument)); } } } // set default values for input arguments. if (m_inputArguments != null) { foreach (Argument argument in m_inputArguments) { argument.Value = TypeInfo.GetDefaultValue(argument.DataType, argument.ValueRank, m_session.TypeTree); } } }
/// <summary> /// Starts a timer to check that the connection to the server is still available. /// </summary> private void StartKeepAliveTimer() { int keepAliveInterval = m_keepAliveInterval; lock (m_eventLock) { m_serverState = ServerState.Unknown; m_lastKeepAliveTime = DateTime.UtcNow; } ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); // read the server state. ReadValueId serverState = new ReadValueId(); serverState.NodeId = Variables.Server_ServerStatus_State; serverState.AttributeId = Attributes.Value; serverState.DataEncoding = null; serverState.IndexRange = null; nodesToRead.Add(serverState); // restart the publish timer. lock (SyncRoot) { if (m_keepAliveTimer != null) { m_keepAliveTimer.Dispose(); m_keepAliveTimer = null; } // start timer. m_keepAliveTimer = new Timer(OnKeepAlive, nodesToRead, keepAliveInterval, keepAliveInterval); } // send initial keep alive. OnKeepAlive(nodesToRead); }
/// <summary> /// Reads the display name for a set of Nodes. /// </summary> public void ReadDisplayName( IList<NodeId> nodeIds, out List<string> displayNames, out List<ServiceResult> errors) { displayNames = new List<string>(); errors = new List<ServiceResult>(); // build list of values to read. ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < nodeIds.Count; ii++) { ReadValueId valueToRead = new ReadValueId(); valueToRead.NodeId = nodeIds[ii]; valueToRead.AttributeId = Attributes.DisplayName; valueToRead.IndexRange = null; valueToRead.DataEncoding = null; valuesToRead.Add(valueToRead); } // read the values. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = Read( null, Int32.MaxValue, TimestampsToReturn.Both, valuesToRead, out results, out diagnosticInfos); // verify that the server returned the correct number of results. ClientBase.ValidateResponse(results, valuesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead); for (int ii = 0; ii < nodeIds.Count; ii++) { displayNames.Add(String.Empty); errors.Add(ServiceResult.Good); // process any diagnostics associated with bad or uncertain data. if (StatusCode.IsNotGood(results[ii].StatusCode)) { errors[ii] = new ServiceResult(results[ii].StatusCode, ii, diagnosticInfos, responseHeader.StringTable); continue; } // extract the name. LocalizedText displayName = results[ii].GetValue<LocalizedText>(null); if (!LocalizedText.IsNullOrEmpty(displayName)) { displayNames[ii] = displayName.Text; } } }
/// <summary> /// Reads the values for a set of variables. /// </summary> /// <param name="variableIds">The variable ids.</param> /// <param name="expectedTypes">The expected types.</param> /// <param name="values">The list of returned values.</param> /// <param name="errors">The list of returned errors.</param> public void ReadValues( IList<NodeId> variableIds, IList<Type> expectedTypes, out List<object> values, out List<ServiceResult> errors) { values = new List<object>(); errors = new List<ServiceResult>(); // build list of values to read. ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < variableIds.Count; ii++) { ReadValueId valueToRead = new ReadValueId(); valueToRead.NodeId = variableIds[ii]; valueToRead.AttributeId = Attributes.Value; valueToRead.IndexRange = null; valueToRead.DataEncoding = null; valuesToRead.Add(valueToRead); } // read the values. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = Read( null, Int32.MaxValue, TimestampsToReturn.Both, valuesToRead, out results, out diagnosticInfos); // verify that the server returned the correct number of results. ClientBase.ValidateResponse(results, valuesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead); for (int ii = 0; ii < variableIds.Count; ii++) { values.Add(null); errors.Add(ServiceResult.Good); // process any diagnostics associated with bad or uncertain data. if (StatusCode.IsNotGood(results[ii].StatusCode)) { errors[ii] = new ServiceResult(results[ii].StatusCode, ii, diagnosticInfos, responseHeader.StringTable); continue; } object value = results[ii].Value; // extract the body from extension objects. ExtensionObject extension = value as ExtensionObject; if (extension != null && extension.Body is IEncodeable) { value = extension.Body; } // check expected type. if (expectedTypes[ii] != null && !expectedTypes[ii].IsInstanceOfType(value)) { errors[ii] = ServiceResult.Create( StatusCodes.BadTypeMismatch, "Value {0} does not have expected type: {1}.", value, expectedTypes[ii].Name); continue; } // suitable value found. values[ii] = value; } }
/// <summary> /// Reads the value for a node. /// </summary> /// <param name="nodeId">The node Id.</param> /// <returns></returns> public DataValue ReadValue(NodeId nodeId) { ReadValueId itemToRead = new ReadValueId(); itemToRead.NodeId = nodeId; itemToRead.AttributeId = Attributes.Value; ReadValueIdCollection itemsToRead = new ReadValueIdCollection(); itemsToRead.Add(itemToRead); // read from server. DataValueCollection values = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = Read( null, 0, TimestampsToReturn.Both, itemsToRead, out values, out diagnosticInfos); ClientBase.ValidateResponse(values, itemsToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, itemsToRead); if (StatusCode.IsBad(values[0].StatusCode)) { ServiceResult result = ClientBase.GetResult(values[0].StatusCode, 0, diagnosticInfos, responseHeader); throw new ServiceResultException(result); } return values[0]; }
public Node ReadNode(NodeId nodeId) { // build list of attributes. SortedDictionary<uint,DataValue> attributes = new SortedDictionary<uint,DataValue>(); attributes.Add(Attributes.NodeId, null); attributes.Add(Attributes.NodeClass, null); attributes.Add(Attributes.BrowseName, null); attributes.Add(Attributes.DisplayName, null); attributes.Add(Attributes.Description, null); attributes.Add(Attributes.WriteMask, null); attributes.Add(Attributes.UserWriteMask, null); attributes.Add(Attributes.DataType, null); attributes.Add(Attributes.ValueRank, null); attributes.Add(Attributes.ArrayDimensions, null); attributes.Add(Attributes.AccessLevel, null); attributes.Add(Attributes.UserAccessLevel, null); attributes.Add(Attributes.Historizing, null); attributes.Add(Attributes.MinimumSamplingInterval, null); attributes.Add(Attributes.EventNotifier, null); attributes.Add(Attributes.Executable, null); attributes.Add(Attributes.UserExecutable, null); attributes.Add(Attributes.IsAbstract, null); attributes.Add(Attributes.InverseName, null); attributes.Add(Attributes.Symmetric, null); attributes.Add(Attributes.ContainsNoLoops, null); // build list of values to read. ReadValueIdCollection itemsToRead = new ReadValueIdCollection(); foreach (uint attributeId in attributes.Keys) { ReadValueId itemToRead = new ReadValueId(); itemToRead.NodeId = nodeId; itemToRead.AttributeId = attributeId; itemsToRead.Add(itemToRead); } // read from server. DataValueCollection values = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = Read( null, 0, TimestampsToReturn.Neither, itemsToRead, out values, out diagnosticInfos); ClientBase.ValidateResponse(values, itemsToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, itemsToRead); // process results. int? nodeClass = null; for (int ii = 0; ii < itemsToRead.Count; ii++) { uint attributeId = itemsToRead[ii].AttributeId; // the node probably does not exist if the node class is not found. if (attributeId == Attributes.NodeClass) { if (!DataValue.IsGood(values[ii])) { throw ServiceResultException.Create(values[ii].StatusCode, ii, diagnosticInfos, responseHeader.StringTable); } // check for valid node class. nodeClass = values[ii].Value as int?; if (nodeClass == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Node does not have a valid value for NodeClass: {0}.", values[ii].Value); } } else { if (!DataValue.IsGood(values[ii])) { // check for unsupported attributes. if (values[ii].StatusCode == StatusCodes.BadAttributeIdInvalid) { continue; } // all supported attributes must be readable. if (attributeId != Attributes.Value) { throw ServiceResultException.Create(values[ii].StatusCode, ii, diagnosticInfos, responseHeader.StringTable); } } } attributes[attributeId] = values[ii]; } Node node = null; DataValue value = null; switch ((NodeClass)nodeClass.Value) { default: { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Node does not have a valid value for NodeClass: {0}.", nodeClass.Value); } case NodeClass.Object: { ObjectNode objectNode = new ObjectNode(); value = attributes[Attributes.EventNotifier]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Object does not support the EventNotifier attribute."); } objectNode.EventNotifier = (byte)attributes[Attributes.EventNotifier].GetValue(typeof(byte)); node = objectNode; break; } case NodeClass.ObjectType: { ObjectTypeNode objectTypeNode = new ObjectTypeNode(); value = attributes[Attributes.IsAbstract]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "ObjectType does not support the IsAbstract attribute."); } objectTypeNode.IsAbstract = (bool)attributes[Attributes.IsAbstract].GetValue(typeof(bool)); node = objectTypeNode; break; } case NodeClass.Variable: { VariableNode variableNode = new VariableNode(); // DataType Attribute value = attributes[Attributes.DataType]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Variable does not support the DataType attribute."); } variableNode.DataType = (NodeId)attributes[Attributes.DataType].GetValue(typeof(NodeId)); // ValueRank Attribute value = attributes[Attributes.ValueRank]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Variable does not support the ValueRank attribute."); } variableNode.ValueRank = (int)attributes[Attributes.ValueRank].GetValue(typeof(int)); // ArrayDimensions Attribute value = attributes[Attributes.ArrayDimensions]; if (value != null) { if (value.Value == null) { variableNode.ArrayDimensions = new uint[0]; } else { variableNode.ArrayDimensions = (uint[])value.GetValue(typeof(uint[])); } } // AccessLevel Attribute value = attributes[Attributes.AccessLevel]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Variable does not support the AccessLevel attribute."); } variableNode.AccessLevel = (byte)attributes[Attributes.AccessLevel].GetValue(typeof(byte)); // UserAccessLevel Attribute value = attributes[Attributes.UserAccessLevel]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Variable does not support the UserAccessLevel attribute."); } variableNode.UserAccessLevel = (byte)attributes[Attributes.UserAccessLevel].GetValue(typeof(byte)); // Historizing Attribute value = attributes[Attributes.Historizing]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Variable does not support the Historizing attribute."); } variableNode.Historizing = (bool)attributes[Attributes.Historizing].GetValue(typeof(bool)); // MinimumSamplingInterval Attribute value = attributes[Attributes.MinimumSamplingInterval]; if (value != null) { variableNode.MinimumSamplingInterval = Convert.ToDouble(attributes[Attributes.MinimumSamplingInterval].Value); } node = variableNode; break; } case NodeClass.VariableType: { VariableTypeNode variableTypeNode = new VariableTypeNode(); // IsAbstract Attribute value = attributes[Attributes.IsAbstract]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "VariableType does not support the IsAbstract attribute."); } variableTypeNode.IsAbstract = (bool)attributes[Attributes.IsAbstract].GetValue(typeof(bool)); // DataType Attribute value = attributes[Attributes.DataType]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "VariableType does not support the DataType attribute."); } variableTypeNode.DataType = (NodeId)attributes[Attributes.DataType].GetValue(typeof(NodeId)); // ValueRank Attribute value = attributes[Attributes.ValueRank]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "VariableType does not support the ValueRank attribute."); } variableTypeNode.ValueRank = (int)attributes[Attributes.ValueRank].GetValue(typeof(int)); // ArrayDimensions Attribute value = attributes[Attributes.ArrayDimensions]; if (value != null && value.Value != null) { variableTypeNode.ArrayDimensions = (uint[])attributes[Attributes.ArrayDimensions].GetValue(typeof(uint[])); } node = variableTypeNode; break; } case NodeClass.Method: { MethodNode methodNode = new MethodNode(); // Executable Attribute value = attributes[Attributes.Executable]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Method does not support the Executable attribute."); } methodNode.Executable = (bool)attributes[Attributes.Executable].GetValue(typeof(bool)); // UserExecutable Attribute value = attributes[Attributes.UserExecutable]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Method does not support the UserExecutable attribute."); } methodNode.UserExecutable = (bool)attributes[Attributes.UserExecutable].GetValue(typeof(bool)); node = methodNode; break; } case NodeClass.DataType: { DataTypeNode dataTypeNode = new DataTypeNode(); // IsAbstract Attribute value = attributes[Attributes.IsAbstract]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "DataType does not support the IsAbstract attribute."); } dataTypeNode.IsAbstract = (bool)attributes[Attributes.IsAbstract].GetValue(typeof(bool)); node = dataTypeNode; break; } case NodeClass.ReferenceType: { ReferenceTypeNode referenceTypeNode = new ReferenceTypeNode(); // IsAbstract Attribute value = attributes[Attributes.IsAbstract]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "ReferenceType does not support the IsAbstract attribute."); } referenceTypeNode.IsAbstract = (bool)attributes[Attributes.IsAbstract].GetValue(typeof(bool)); // Symmetric Attribute value = attributes[Attributes.Symmetric]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "ReferenceType does not support the Symmetric attribute."); } referenceTypeNode.Symmetric = (bool)attributes[Attributes.IsAbstract].GetValue(typeof(bool)); // InverseName Attribute value = attributes[Attributes.InverseName]; if (value != null && value.Value != null) { referenceTypeNode.InverseName = (LocalizedText)attributes[Attributes.InverseName].GetValue(typeof(LocalizedText)); } node = referenceTypeNode; break; } case NodeClass.View: { ViewNode viewNode = new ViewNode(); // EventNotifier Attribute value = attributes[Attributes.EventNotifier]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "View does not support the EventNotifier attribute."); } viewNode.EventNotifier = (byte)attributes[Attributes.EventNotifier].GetValue(typeof(byte)); // ContainsNoLoops Attribute value = attributes[Attributes.ContainsNoLoops]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "View does not support the ContainsNoLoops attribute."); } viewNode.ContainsNoLoops = (bool)attributes[Attributes.ContainsNoLoops].GetValue(typeof(bool)); node = viewNode; break; } } // NodeId Attribute value = attributes[Attributes.NodeId]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Node does not support the NodeId attribute."); } node.NodeId = (NodeId)attributes[Attributes.NodeId].GetValue(typeof(NodeId)); node.NodeClass = (NodeClass)nodeClass.Value; // BrowseName Attribute value = attributes[Attributes.BrowseName]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Node does not support the BrowseName attribute."); } node.BrowseName = (QualifiedName)attributes[Attributes.BrowseName].GetValue(typeof(QualifiedName)); // DisplayName Attribute value = attributes[Attributes.DisplayName]; if (value == null) { throw ServiceResultException.Create(StatusCodes.BadUnexpectedError, "Node does not support the DisplayName attribute."); } node.DisplayName = (LocalizedText)attributes[Attributes.DisplayName].GetValue(typeof(LocalizedText)); // Description Attribute value = attributes[Attributes.Description]; if (value != null && value.Value != null) { node.Description = (LocalizedText)attributes[Attributes.Description].GetValue(typeof(LocalizedText)); } // WriteMask Attribute value = attributes[Attributes.WriteMask]; if (value != null) { node.WriteMask = (uint)attributes[Attributes.WriteMask].GetValue(typeof(uint)); } // UserWriteMask Attribute value = attributes[Attributes.UserWriteMask]; if (value != null) { node.WriteMask = (uint)attributes[Attributes.UserWriteMask].GetValue(typeof(uint)); } return node; }
/// <summary> /// Reads the application description from the GDS. /// </summary> private ApplicationDescription Read(NodeId nodeId) { NamespaceTable wellKnownNamespaceUris = new NamespaceTable(); wellKnownNamespaceUris.Append(Namespaces.OpcUaGds); string[] browsePaths = new string[] { "1:ApplicationName", "1:ApplicationType", "1:ApplicationUri", "1:ProductUri", "1:GatewayServerUri", "1:DiscoveryUrls" }; List<NodeId> propertyIds = ClientUtils.TranslateBrowsePaths( ServerCTRL.Session, nodeId, wellKnownNamespaceUris, browsePaths); ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (NodeId propertyId in propertyIds) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = propertyId; nodeToRead.AttributeId = Attributes.Value; nodesToRead.Add(nodeToRead); } DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; ServerCTRL.Session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); ApplicationDescription application = new ApplicationDescription(); application.ApplicationName = results[0].GetValue<LocalizedText>(null); application.ApplicationType = (ApplicationType)results[1].GetValue<int>((int)ApplicationType.Server); application.ApplicationUri = results[2].GetValue<string>(null); application.ProductUri = results[3].GetValue<string>(null); application.GatewayServerUri = results[4].GetValue<string>(null); string[] discoveryUrls = results[5].GetValue<string[]>(null); if (discoveryUrls != null) { application.DiscoveryUrls = new StringCollection(discoveryUrls); } return application; }
/// <summary> /// Returns the items in the control. /// </summary> public ReadValueIdCollection GetValueIds() { ReadValueIdCollection valueIds = new ReadValueIdCollection(); foreach (ListViewItem item in ItemsLV.Items) { ReadValueId valueId = item.Tag as ReadValueId; if (valueId != null) { valueIds.Add(valueId); } } return valueIds; }
private void ReadMI_Click(object sender, EventArgs e) { try { if (NodesTV.SelectedNode == null) { return; } ReferenceDescription reference = NodesTV.SelectedNode.Tag as ReferenceDescription; if (reference == null || (reference.NodeClass & (NodeClass.Variable | NodeClass.VariableType)) == 0) { return; } Session session = m_browser.Session; // build list of nodes to read. ReadValueIdCollection valueIds = new ReadValueIdCollection(); ReadValueId valueId = new ReadValueId(); valueId.NodeId = (NodeId)reference.NodeId; valueId.AttributeId = Attributes.Value; valueId.IndexRange = null; valueId.DataEncoding = null; valueIds.Add(valueId); // show form. new ReadDlg().Show(session, valueIds); } catch (Exception exception) { GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception); } }
/// <summary> /// Tests the session keep alive when there are no errors. /// </summary> private bool DoKeepAliveTest() { bool success = true; double increment = MaxProgress/3; double position = 0; m_keepAliveCount = 0; int currentKeepAlive = Session.KeepAliveInterval; List<Subscription> subscriptions = new List<Subscription>(); KeepAliveEventHandler handler = new KeepAliveEventHandler(Session_KeepAlive); try { Session.KeepAlive += handler; // add several subscriptions with long publish intervals. for (int publishingInterval = 10000; publishingInterval <= 20000; publishingInterval += 1000) { Subscription subscription = new Subscription(); subscription.MaxMessageCount = 100; subscription.LifetimeCount = 100; subscription.KeepAliveCount = 10; subscription.PublishingEnabled = true; subscription.PublishingInterval = publishingInterval; MonitoredItem monitoredItem = new MonitoredItem(); monitoredItem.StartNodeId = VariableIds.Server_ServerStatus_CurrentTime; monitoredItem.AttributeId = Attributes.Value; monitoredItem.SamplingInterval = -1; monitoredItem.QueueSize = 0; monitoredItem.DiscardOldest = true; subscription.AddItem(monitoredItem); Session.AddSubscription(subscription); subscription.Create(); subscriptions.Add(subscription); } // get a value to read. ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = VariableIds.Server_ServerStatus; nodeToRead.AttributeId = Attributes.Value; ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); nodesToRead.Add(nodeToRead); int testDuration = 5000; // make sure the keep alives come at the expected rate. for (int keepAliveInterval = 500; keepAliveInterval < 2000; keepAliveInterval += 500) { m_keepAliveCount = 0; DateTime start = DateTime.UtcNow; DataValueCollection results = null; DiagnosticInfoCollection diagnosticsInfos = null; Session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticsInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticsInfos, nodesToRead); ServerStatusDataType status = ExtensionObject.ToEncodeable(results[0].Value as ExtensionObject) as ServerStatusDataType; if (status == null) { Log("Server did not return a valid ServerStatusDataType structure. Value={0}, Status={1}", results[0].WrappedValue, results[0].StatusCode); return false; } if ((DateTime.UtcNow - start).TotalSeconds > 1) { Log("Unexpected delay reading the ServerStatus structure. Delay={0}s", (DateTime.UtcNow - start).TotalSeconds); return false; } Log("Setting keep alive interval to {0}ms.", keepAliveInterval); Session.KeepAliveInterval = keepAliveInterval; if (m_errorEvent.WaitOne(testDuration, false)) { Log("Unexpected error waiting for session keep alives. {0}", m_error.ToLongString()); return false; } if (m_keepAliveCount < testDuration / keepAliveInterval) { Log("Missing session keep alives. Expected={0}, Actual={1}", testDuration / keepAliveInterval, m_keepAliveCount); return false; } Log("{0} keep alives received in {1}ms.", m_keepAliveCount, testDuration); position += increment; ReportProgress(position); } ReportProgress(MaxProgress); } finally { Session.RemoveSubscriptions(subscriptions); Session.KeepAliveInterval = currentKeepAlive; Session.KeepAlive -= handler; } return success; }
/// <summary> /// Reads the values displayed in the control and moves to the display results state. /// </summary> public void Read() { if (m_session == null) { throw new ServiceResultException(StatusCodes.BadNotConnected); } // build list of values to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (DataGridViewRow row in ResultsDV.Rows) { DataRowView source = row.DataBoundItem as DataRowView; ReadValueId value = (ReadValueId)source.Row[0]; row.Selected = false; nodesToRead.Add(value); } // read the values. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Both, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); IndexRangeCH.Visible = false; DataEncodingCH.Visible = false; DataTypeCH.Visible = true; ValueCH.Visible = true; StatusCodeCH.Visible = true; SourceTimestampCH.Visible = true; ServerTimestampCH.Visible = true; m_showResults = true; // add the results to the display. for (int ii = 0; ii < results.Count; ii++) { DataRowView source = ResultsDV.Rows[ii].DataBoundItem as DataRowView; UpdateRow(source.Row, results[ii]); } }
/// <summary> /// Adds the attributes to the control. /// </summary> private void AddAttributes() { // build list of attributes to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (uint attributeId in Attributes.GetIdentifiers()) { ReadValueId valueId = new ReadValueId(); valueId.NodeId = m_nodeId; valueId.AttributeId = attributeId; valueId.IndexRange = null; valueId.DataEncoding = null; nodesToRead.Add(valueId); } // read attributes. DataValueCollection values; DiagnosticInfoCollection diagnosticInfos; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out values, out diagnosticInfos); ClientBase.ValidateResponse(values, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // update control. for (int ii = 0; ii < nodesToRead.Count; ii++) { // check if node supports attribute. if (values[ii].StatusCode == StatusCodes.BadAttributeIdInvalid) { continue; } NodeField field = new NodeField(); field.ValueId = nodesToRead[ii]; field.Name = Attributes.GetBrowseName(nodesToRead[ii].AttributeId); field.Value = values[ii].Value; field.StatusCode = values[ii].StatusCode; if (diagnosticInfos != null && diagnosticInfos.Count > ii) { field.DiagnosticInfo = diagnosticInfos[ii]; } AddItem(field, "SimpleItem", -1); } }
/// <summary> /// Adds the properties to the control. /// </summary> private void AddProperties() { // build list of properties to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); Browser browser = new Browser(m_session); browser.BrowseDirection = BrowseDirection.Forward; browser.ReferenceTypeId = ReferenceTypeIds.HasProperty; browser.IncludeSubtypes = true; browser.NodeClassMask = (int)NodeClass.Variable; browser.ContinueUntilDone = true; ReferenceDescriptionCollection references = browser.Browse(m_nodeId); foreach (ReferenceDescription reference in references) { ReadValueId valueId = new ReadValueId(); valueId.NodeId = (NodeId)reference.NodeId; valueId.AttributeId = Attributes.Value; valueId.IndexRange = null; valueId.DataEncoding = null; nodesToRead.Add(valueId); } // check for empty list. if (nodesToRead.Count == 0) { return; } // read values. DataValueCollection values; DiagnosticInfoCollection diagnosticInfos; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out values, out diagnosticInfos); ClientBase.ValidateResponse(values, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // update control. for (int ii = 0; ii < nodesToRead.Count; ii++) { NodeField field = new NodeField(); field.ValueId = nodesToRead[ii]; field.Name = references[ii].ToString(); field.Value = values[ii].Value; field.StatusCode = values[ii].StatusCode; if (diagnosticInfos != null && diagnosticInfos.Count > ii) { field.DiagnosticInfo = diagnosticInfos[ii]; } AddItem(field, "Property", -1); } }
/// <summary> /// Reads the EU range for a variable. /// </summary> private void ReadEURanges(List<TestVariable> variables) { ReadValueIdCollection euRanges = new ReadValueIdCollection(); for (int ii = 0; ii < m_variables.Count; ii++) { VariableNode variable = m_variables[ii].Variable; if (m_variables[ii].EURangeNode != null) { ReadValueId rangeToRead = new ReadValueId(); rangeToRead.NodeId = m_variables[ii].EURangeNode.NodeId; rangeToRead.AttributeId = Attributes.Value; rangeToRead.Handle = m_variables[ii]; euRanges.Add(rangeToRead); } } // lookup the EU range. if (euRanges.Count > 0) { DataValueCollection results; DiagnosticInfoCollection diagnosticInfos; RequestHeader requestHeader = new RequestHeader(); requestHeader.ReturnDiagnostics = 0; ResponseHeader responseHeader = Session.Read( requestHeader, 0, TimestampsToReturn.Neither, euRanges, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, euRanges); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, euRanges); for (int ii = 0; ii < results.Count; ii++) { Range range = ExtensionObject.ToEncodeable(results[ii].Value as ExtensionObject) as Range; TestVariable variable = (TestVariable)euRanges[ii].Handle; variable.EURange = range; } } }
/// <see cref="BaseListCtrl.GetDataToDrag" /> protected override object GetDataToDrag() { ReadValueIdCollection valueIds = new ReadValueIdCollection(); foreach (ListViewItem listItem in ItemsLV.SelectedItems) { NodeField field = listItem.Tag as NodeField; if (field != null && field.ValueId != null) { valueIds.Add(field.ValueId); } } return valueIds; }
/// <summary> /// Handles a read operations that fetch data from an external source. /// </summary> protected override void Read( ServerSystemContext context, IList<ReadValueId> nodesToRead, IList<DataValue> values, IList<ServiceResult> errors, List<NodeHandle> nodesToValidate, IDictionary<NodeId, NodeState> cache) { ReadValueIdCollection requests = new ReadValueIdCollection(); List<int> indexes = new List<int>(); for (int ii = 0; ii < nodesToValidate.Count; ii++) { NodeHandle handle = nodesToValidate[ii]; ReadValueId nodeToRead = nodesToRead[ii]; DataValue value = values[ii]; lock (Lock) { // validate node. NodeState source = ValidateNode(context, handle, cache); if (source == null) { continue; } // determine if a local node. if (PredefinedNodes.ContainsKey(source.NodeId)) { errors[handle.Index] = source.ReadAttribute( context, nodeToRead.AttributeId, nodeToRead.ParsedIndexRange, nodeToRead.DataEncoding, value); continue; } ReadValueId request = (ReadValueId)nodeToRead.Clone(); request.NodeId = m_mapper.ToRemoteId(nodeToRead.NodeId); request.DataEncoding = m_mapper.ToRemoteName(nodeToRead.DataEncoding); requests.Add(request); indexes.Add(ii); } } // send request to external system. try { Opc.Ua.Client.Session client = GetClientSession(context); DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; ResponseHeader responseHeader = client.Read( null, 0, TimestampsToReturn.Both, requests, out results, out diagnosticInfos); // these do sanity checks on the result - make sure response matched the request. ClientBase.ValidateResponse(results, requests); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, requests); // set results. for (int ii = 0; ii < requests.Count; ii++) { values[indexes[ii]] = results[ii]; values[indexes[ii]].WrappedValue = m_mapper.ToLocalVariant(results[ii].WrappedValue); errors[indexes[ii]] = ServiceResult.Good; if (results[ii].StatusCode != StatusCodes.Good) { errors[indexes[ii]] = new ServiceResult(results[ii].StatusCode, ii, diagnosticInfos, responseHeader.StringTable); } } } catch (Exception e) { // handle unexpected communication error. ServiceResult error = ServiceResult.Create(e, StatusCodes.BadUnexpectedError, "Could not access external system."); for (int ii = 0; ii < requests.Count; ii++) { errors[indexes[ii]] = error; } } }
/// <summary> /// Runs the test in a background thread. /// </summary> private void DoTest(ConfiguredEndpoint endpoint) { PerformanceTestResult result = new PerformanceTestResult(endpoint, 100); result.Results.Add(1, -1); result.Results.Add(10, -1); result.Results.Add(50, -1); result.Results.Add(100, -1); result.Results.Add(250, -1); result.Results.Add(500, -1); try { // update the endpoint. if (endpoint.UpdateBeforeConnect) { endpoint.UpdateFromServer(); } SessionClient client = null; Uri url = new Uri(endpoint.Description.EndpointUrl); ITransportChannel channel = SessionChannel.Create( m_configuration, endpoint.Description, endpoint.Configuration, m_clientCertificate, m_messageContext); client = new SessionClient(channel); List<int> requestSizes = new List<int>(result.Results.Keys); for (int ii = 0; ii < requestSizes.Count; ii++) { // update the progress indicator. TestProgress((ii * 100) / requestSizes.Count); lock (m_lock) { if (!m_running) { break; } } int count = requestSizes[ii]; // initialize request. RequestHeader requestHeader = new RequestHeader(); requestHeader.ReturnDiagnostics = 5000; ReadValueIdCollection nodesToRead = new ReadValueIdCollection(count); for (int jj = 0; jj < count; jj++) { ReadValueId item = new ReadValueId(); item.NodeId = new NodeId((uint)jj, 1); item.AttributeId = Attributes.Value; nodesToRead.Add(item); } // ensure valid connection. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; client.Read( requestHeader, 0, TimestampsToReturn.Both, nodesToRead, out results, out diagnosticInfos); if (results.Count != count) { throw new ServiceResultException(StatusCodes.BadUnknownResponse); } // do test. DateTime start = DateTime.UtcNow; for (int jj = 0; jj < result.Iterations; jj++) { client.Read( requestHeader, 0, TimestampsToReturn.Both, nodesToRead, out results, out diagnosticInfos); if (results.Count != count) { throw new ServiceResultException(StatusCodes.BadUnknownResponse); } } DateTime finish = DateTime.UtcNow; long totalTicks = finish.Ticks - start.Ticks; decimal averageMilliseconds = ((((decimal)totalTicks) / ((decimal)result.Iterations))) / ((decimal)TimeSpan.TicksPerMillisecond); result.Results[requestSizes[ii]] = (double)averageMilliseconds; } } finally { TestComplete(result); } }
/// <summary> /// Reads the contents of a data dictionary. /// </summary> private byte[] ReadDictionary(NodeId dictionaryId) { // create item to read. ReadValueId itemToRead = new ReadValueId(); itemToRead.NodeId = dictionaryId; itemToRead.AttributeId = Attributes.Value; itemToRead.IndexRange = null; itemToRead.DataEncoding = null; ReadValueIdCollection itemsToRead = new ReadValueIdCollection(); itemsToRead.Add(itemToRead); // read value. DataValueCollection values; DiagnosticInfoCollection diagnosticInfos; ResponseHeader responseHeader = m_session.Read( null, 0, TimestampsToReturn.Neither, itemsToRead, out values, out diagnosticInfos); ClientBase.ValidateResponse(values, itemsToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, itemsToRead); // check for error. if (StatusCode.IsBad(values[0].StatusCode)) { ServiceResult result = ClientBase.GetResult(values[0].StatusCode, 0, diagnosticInfos, responseHeader); throw new ServiceResultException(result); } // return as a byte array. return values[0].Value as byte[]; }
/// <summary> /// Reads the attributes for the node. /// </summary> public void ReadAttributes(NodeId nodeId, bool showProperties) { AttributesLV.Items.Clear(); if (NodeId.IsNull(nodeId)) { return; } // build list of attributes to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); foreach (uint attributeId in Attributes.GetIdentifiers()) { ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = nodeId; nodeToRead.AttributeId = attributeId; nodesToRead.Add(nodeToRead); } // read the attributes. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // add the results to the display. for (int ii = 0; ii < results.Count; ii++) { // check for error. if (StatusCode.IsBad(results[ii].StatusCode)) { if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid) { continue; } } // add the metadata for the attribute. uint attributeId = nodesToRead[ii].AttributeId; ListViewItem item = new ListViewItem(Attributes.GetBrowseName(attributeId)); item.SubItems.Add(Attributes.GetBuiltInType(attributeId).ToString()); if (Attributes.GetValueRank(attributeId) >= 0) { item.SubItems[0].Text += "[]"; } // add the value. if (StatusCode.IsBad(results[ii].StatusCode)) { item.SubItems.Add(results[ii].StatusCode.ToString()); } else { item.SubItems.Add(ClientUtils.GetAttributeDisplayText(m_session, attributeId, results[ii].WrappedValue)); } item.Tag = new AttributeInfo() { NodeToRead = nodesToRead[ii], Value = results[ii] }; item.ImageIndex = ClientUtils.GetImageIndex(nodesToRead[ii].AttributeId, results[ii].Value); // display in list. AttributesLV.Items.Add(item); } if (showProperties) { ReadProperties(nodeId); } // set the column widths. for (int ii = 0; ii < AttributesLV.Columns.Count; ii++) { AttributesLV.Columns[ii].Width = -2; } }
/// <summary> /// Reads the values for the specified item ids. /// </summary> /// <param name="itemIds">The item ids.</param> /// <returns>The values.</returns> public DaValue[] Read(string[] itemIds) { ReadValueIdCollection valuesToRead = new ReadValueIdCollection(); for (int ii = 0; ii < itemIds.Length; ii++) { ReadValueId valueToRead = new ReadValueId(); valueToRead.NodeId = m_mapper.GetRemoteNodeId(itemIds[ii]); valueToRead.AttributeId = Attributes.Value; valuesToRead.Add(valueToRead); } return m_groupManager.Read(valuesToRead); }
/// <summary> /// Reads the properties for the node. /// </summary> private void ReadProperties(NodeId nodeId) { // build list of references to browse. BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection(); BrowseDescription nodeToBrowse = new BrowseDescription(); nodeToBrowse.NodeId = nodeId; nodeToBrowse.BrowseDirection = BrowseDirection.Forward; nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty; nodeToBrowse.IncludeSubtypes = true; nodeToBrowse.NodeClassMask = (uint)NodeClass.Variable; nodeToBrowse.ResultMask = (uint)BrowseResultMask.All; nodesToBrowse.Add(nodeToBrowse); // find properties. ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, View, nodesToBrowse, false); // build list of properties to read. ReadValueIdCollection nodesToRead = new ReadValueIdCollection(); for (int ii = 0; references != null && ii < references.Count; ii++) { ReferenceDescription reference = references[ii]; // ignore out of server references. if (reference.NodeId.IsAbsolute) { continue; } ReadValueId nodeToRead = new ReadValueId(); nodeToRead.NodeId = (NodeId)reference.NodeId; nodeToRead.AttributeId = Attributes.Value; nodeToRead.Handle = reference; nodesToRead.Add(nodeToRead); } if (nodesToRead.Count == 0) { return; } // read the properties. DataValueCollection results = null; DiagnosticInfoCollection diagnosticInfos = null; m_session.Read( null, 0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos); ClientBase.ValidateResponse(results, nodesToRead); ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead); // add the results to the display. for (int ii = 0; ii < results.Count; ii++) { ReferenceDescription reference = (ReferenceDescription)nodesToRead[ii].Handle; TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value); // add the metadata for the attribute. ListViewItem item = new ListViewItem(reference.ToString()); item.SubItems.Add(typeInfo.BuiltInType.ToString()); if (typeInfo.ValueRank >= 0) { item.SubItems[1].Text += "[]"; } // add the value. if (StatusCode.IsBad(results[ii].StatusCode)) { item.SubItems.Add(results[ii].StatusCode.ToString()); } else { item.SubItems.Add(results[ii].WrappedValue.ToString()); } item.Tag = new AttributeInfo() { NodeToRead = nodesToRead[ii], Value = results[ii] }; item.ImageIndex = ClientUtils.GetImageIndex(m_session, NodeClass.Variable, Opc.Ua.VariableTypeIds.PropertyType, false); // display in list. AttributesLV.Items.Add(item); } }