/// <summary>
/// Handles a method call.
/// </summary>
private ServiceResult DoGenerateRandomValues(
ISystemContext context,
MethodState method,
IList <object> inputArguments,
IList <object> outputArguments)
{
ComDaClientManager system = (ComDaClientManager)this.SystemContext.SystemHandle;
ComDaClient client = system.SelectClient((ServerSystemContext)context, false);
Opc.Ua.Test.DataGenerator generator = new Opc.Ua.Test.DataGenerator(null);
IDaElementBrowser browser = client.CreateBrowser((string)method.Handle);
// create write requests.
WriteRequestCollection requests = new WriteRequestCollection();
try
{
for (DaElement element = browser.Next(); element != null; element = browser.Next())
{
if (element.ElementType == DaElementType.Branch)
{
continue;
}
// generate a random value of the correct data tyoe.
bool isArray = false;
NodeId dataTypeId = ComUtils.GetDataTypeId(element.DataType, out isArray);
object value = generator.GetRandom(
dataTypeId,
(isArray)?ValueRanks.OneDimension:ValueRanks.Scalar,
null,
context.TypeTable);
// create a request.
requests.Add(new Opc.Ua.Com.Client.WriteRequest(element.ItemId, new DataValue(new Variant(value)), 0));
}
}
finally
{
browser.Dispose();
}
// write values.
client.Write(requests);
return(ServiceResult.Good);
}
/// <summary>
/// Initializes the node from the element.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="itemId">The item id.</param>
/// <param name="property">The property.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public void Initialize(ISystemContext context, string itemId, DaProperty property, ushort namespaceIndex)
{
m_itemId = itemId;
m_property = property;
if (property == null)
{
return;
}
this.NodeId = ModelUtils.ConstructIdForDaElement(m_itemId, property.PropertyId, namespaceIndex);
this.BrowseName = new QualifiedName(property.Name, namespaceIndex);
this.DisplayName = new LocalizedText(property.Name);
this.TypeDefinitionId = Opc.Ua.VariableTypeIds.PropertyType;
this.Value = null;
this.StatusCode = StatusCodes.BadWaitingForInitialData;
this.Timestamp = DateTime.UtcNow;
bool isArray = false;
this.DataType = ComUtils.GetDataTypeId(property.DataType, out isArray);
this.ValueRank = (isArray)?ValueRanks.OneOrMoreDimensions:ValueRanks.Scalar;
this.ArrayDimensions = null;
// assume that properties with item ids are writeable. the server may still reject the write.
if (String.IsNullOrEmpty(property.ItemId))
{
this.AccessLevel = AccessLevels.CurrentRead;
}
else
{
this.AccessLevel = AccessLevels.CurrentReadOrWrite;
}
this.UserAccessLevel = this.AccessLevel;
this.MinimumSamplingInterval = MinimumSamplingIntervals.Indeterminate;
this.Historizing = false;
// add a reference to the parent node.
NodeId parentNodeId = ModelUtils.ConstructIdForDaElement(itemId, -1, namespaceIndex);
this.AddReference(ReferenceTypeIds.HasProperty, true, parentNodeId);
}
/// <summary>
/// Validates the items.
/// </summary>
/// <param name="group">The group.</param>
/// <param name="requests">The requests.</param>
/// <returns>The items. May contain null is validation failed.</returns>
public ComDaGroupItem[] ValidateItems(ComDaGroup group, ComDaCreateItemRequest[] requests)
{
TraceState("ValidateItems", group.Name);
// get the session to use for the operation.
Session session = m_session;
if (session == null)
{
throw ComUtils.CreateComException(ResultIds.E_FAIL);
}
// validate items.
ComDaGroupItem[] items = new ComDaGroupItem[requests.Length];
for (int ii = 0; ii < requests.Length; ii += 10000)
{
ValidateItems(session, group, requests, items, ii, 10000);
}
// process results.
for (int ii = 0; ii < requests.Length; ii++)
{
// check for the results.
ComDaCreateItemRequest request = requests[ii];
if (request.Error < 0)
{
items[ii] = null;
continue;
}
// check access path.
if (!String.IsNullOrEmpty(request.AccessPath))
{
items[ii] = null;
request.Error = ResultIds.E_UNKNOWNPATH;
continue;
}
ComDaGroupItem item = items[ii];
// validate the datatype.
if (request.RequestedDataType != 0)
{
NodeId dataTypeId = ComUtils.GetDataTypeId(request.RequestedDataType);
if (NodeId.IsNull(dataTypeId))
{
items[ii] = null;
request.Error = ResultIds.E_BADTYPE;
continue;
}
bool reqTypeIsArray = (request.RequestedDataType & (short)VarEnum.VT_ARRAY) != 0;
bool actualTypeIsArray = (item.CanonicalDataType & (short)VarEnum.VT_ARRAY) != 0;
if (reqTypeIsArray != actualTypeIsArray)
{
items[ii] = null;
request.Error = ResultIds.E_BADTYPE;
continue;
}
}
// create a new monitored item.
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.StartNodeId = item.NodeId;
monitoredItem.RelativePath = null;
monitoredItem.AttributeId = Attributes.Value;
monitoredItem.MonitoringMode = (request.Active)?MonitoringMode.Reporting:MonitoringMode.Disabled;
monitoredItem.SamplingInterval = group.UpdateRate / 2;
monitoredItem.QueueSize = 0;
monitoredItem.DiscardOldest = true;
monitoredItem.Filter = null;
// update item.
item.ServerHandle = (int)monitoredItem.ClientHandle;
item.MonitoredItem = monitoredItem;
// link the monitored item back to the group item.
monitoredItem.Handle = item;
// update return parameters.
request.ServerHandle = item.ServerHandle;
request.CanonicalDataType = item.CanonicalDataType;
request.AccessRights = item.AccessRights;
request.Error = ResultIds.S_OK;
}
return(items);
}
/// <summary>
/// Initializes a new instance of the <see cref="AeEventTypeState"/> class.
/// </summary>
public AeEventTypeState(EventType eventType, ushort namespaceIndex)
{
m_eventType = eventType;
// create the name for the event type.
string name = eventType.Description;
if (!String.IsNullOrEmpty(eventType.ConditionName))
{
name = eventType.ConditionName;
}
if (!name.EndsWith("Type"))
{
if (eventType.EventTypeId == OpcRcw.Ae.Constants.CONDITION_EVENT)
{
name += "AlarmType";
}
else
{
name += "EventType";
}
}
// the attributes.
this.NodeId = AeParsedNodeId.Construct(eventType, null, namespaceIndex);
this.BrowseName = new QualifiedName(name, namespaceIndex);
this.DisplayName = eventType.Description;
this.IsAbstract = false;
this.SuperTypeId = AeParsedNodeId.Construct(eventType.EventTypeMapping, namespaceIndex);
// add the attributes as properties.
if (eventType.Attributes != null)
{
for (int ii = 0; ii < eventType.Attributes.Count; ii++)
{
string propertyName = eventType.Attributes[ii].Description;
if (AeTypeCache.IsKnownName(propertyName, "ACK COMMENT"))
{
continue;
}
PropertyState property = new PropertyState(this);
property.SymbolicName = propertyName;
property.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
property.TypeDefinitionId = Opc.Ua.VariableTypeIds.PropertyType;
property.ModellingRuleId = Opc.Ua.ObjectIds.ModellingRule_Optional;
property.NodeId = AeParsedNodeId.Construct(eventType, propertyName, namespaceIndex);
property.BrowseName = new QualifiedName(propertyName, namespaceIndex);
property.DisplayName = property.BrowseName.Name;
property.AccessLevel = AccessLevels.None;
property.UserAccessLevel = AccessLevels.None;
property.MinimumSamplingInterval = MinimumSamplingIntervals.Indeterminate;
property.Historizing = false;
bool isArray = false;
property.DataType = ComUtils.GetDataTypeId(eventType.Attributes[ii].VarType, out isArray);
property.ValueRank = (isArray) ? ValueRanks.OneDimension : ValueRanks.Scalar;
this.AddChild(property);
}
}
}
/// <summary>
/// Gets the result for the read operayoin.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="item">The item.</param>
/// <param name="nodeToRead">The node to read.</param>
/// <param name="value">The value.</param>
/// <param name="diagnosticsMasks">The diagnostics masks.</param>
/// <returns></returns>
public ServiceResult GetResult(
ISystemContext context,
DaItemState item,
ReadValueId nodeToRead,
DataValue value,
DiagnosticsMasks diagnosticsMasks)
{
if (nodeToRead.AttributeId == Attributes.Value)
{
ServiceResult result = GetItemValue(m_value, value, diagnosticsMasks);
if (ServiceResult.IsBad(result))
{
return(result);
}
return(ApplyIndexRangeAndDataEncoding(context, nodeToRead, value));
}
switch (nodeToRead.AttributeId)
{
case Attributes.Description:
{
string description = this.GetPropertyValue <string>(Opc.Ua.Com.PropertyIds.Description, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = new LocalizedText(description);
}
break;
}
case Attributes.DataType:
{
short datatype = this.GetPropertyValue <short>(Opc.Ua.Com.PropertyIds.DataType, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = ComUtils.GetDataTypeId(datatype);
}
break;
}
case Attributes.ValueRank:
{
short datatype = this.GetPropertyValue <short>(Opc.Ua.Com.PropertyIds.DataType, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = ComUtils.GetValueRank(datatype);
}
break;
}
case Attributes.AccessLevel:
case Attributes.UserAccessLevel:
{
int accessRights = this.GetPropertyValue <int>(Opc.Ua.Com.PropertyIds.AccessRights, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = (byte)accessRights;
}
break;
}
case Attributes.MinimumSamplingInterval:
{
float scanRate = this.GetPropertyValue <float>(Opc.Ua.Com.PropertyIds.ScanRate, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = (double)scanRate;
}
break;
}
default:
{
return(StatusCodes.BadAttributeIdInvalid);
}
}
// check if the property value is missing.
if (value.StatusCode == StatusCodes.BadNotFound)
{
return(StatusCodes.BadAttributeIdInvalid);
}
return(ApplyIndexRangeAndDataEncoding(context, nodeToRead, value));
}
/// <summary>
/// Initializes the node from the element.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="element">The element.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public void Initialize(ISystemContext context, DaElement element, ushort namespaceIndex)
{
m_element = element;
if (element == null)
{
return;
}
this.NodeId = DaModelUtils.ConstructIdForDaElement(element.ItemId, -1, namespaceIndex);
this.BrowseName = new QualifiedName(element.Name, namespaceIndex);
this.DisplayName = new LocalizedText(element.Name);
// check if TimeZone is supported.
if (element.TimeZone != null)
{
PropertyState property = this.AddProperty <Range>(Opc.Ua.BrowseNames.LocalTime, DataTypeIds.TimeZoneDataType, ValueRanks.Scalar);
property.NodeId = DaModelUtils.ConstructIdForComponent(property, namespaceIndex);
property.Value = new Range(element.HighIR, element.LowIR);
}
// set the TypeDefinition based on the ElementType.
switch (element.ElementType)
{
case DaElementType.AnalogItem:
{
this.TypeDefinitionId = Opc.Ua.VariableTypeIds.AnalogItemType;
// EURange is always present.
PropertyState property = this.AddProperty <Range>(Opc.Ua.BrowseNames.EURange, DataTypeIds.Range, ValueRanks.Scalar);
property.NodeId = DaModelUtils.ConstructIdForComponent(property, namespaceIndex);
property.Value = new Range(element.HighEU, element.LowEU);
// check if InstrumentRange is supported.
if (element.HighIR != 0 || element.LowIR != 0)
{
property = this.AddProperty <Range>(Opc.Ua.BrowseNames.InstrumentRange, DataTypeIds.Range, ValueRanks.Scalar);
property.NodeId = DaModelUtils.ConstructIdForComponent(property, namespaceIndex);
property.Value = new Range(element.HighIR, element.LowIR);
}
// check if EngineeringUnits is supported.
if (element.EngineeringUnits != null)
{
property = this.AddProperty <EUInformation>(Opc.Ua.BrowseNames.EngineeringUnits, DataTypeIds.EUInformation, ValueRanks.Scalar);
property.NodeId = DaModelUtils.ConstructIdForComponent(property, namespaceIndex);
// use the server's namespace uri to qualify the engineering units.
string namespaceUri = context.NamespaceUris.GetString(namespaceIndex);
property.Value = new EUInformation(element.EngineeringUnits, namespaceUri);
}
break;
}
case DaElementType.DigitalItem:
{
this.TypeDefinitionId = Opc.Ua.VariableTypeIds.TwoStateDiscreteType;
// check if CloseLabel is supported.
if (element.CloseLabel != null)
{
PropertyState property = this.AddProperty <LocalizedText>(Opc.Ua.BrowseNames.TrueState, DataTypeIds.LocalizedText, ValueRanks.Scalar);
property.NodeId = DaModelUtils.ConstructIdForComponent(property, namespaceIndex);
property.Value = element.CloseLabel;
}
// check if OpenLabel is supported.
if (element.OpenLabel != null)
{
PropertyState property = this.AddProperty <LocalizedText>(Opc.Ua.BrowseNames.FalseState, DataTypeIds.LocalizedText, ValueRanks.Scalar);
property.NodeId = DaModelUtils.ConstructIdForComponent(property, namespaceIndex);
property.Value = element.OpenLabel;
}
break;
}
case DaElementType.EnumeratedItem:
{
this.TypeDefinitionId = Opc.Ua.VariableTypeIds.MultiStateDiscreteType;
// check if EuInfo is supported.
if (element.EuInfo != null)
{
PropertyState property = this.AddProperty <LocalizedText[]>(Opc.Ua.BrowseNames.EnumStrings, DataTypeIds.LocalizedText, ValueRanks.OneDimension);
property.NodeId = DaModelUtils.ConstructIdForComponent(property, namespaceIndex);
LocalizedText[] strings = new LocalizedText[element.EuInfo.Length];
for (int ii = 0; ii < strings.Length; ii++)
{
strings[ii] = element.EuInfo[ii];
}
property.Value = strings;
}
break;
}
}
if (element.Description != null)
{
this.Description = element.Description;
}
this.Value = null;
this.StatusCode = StatusCodes.BadWaitingForInitialData;
this.Timestamp = DateTime.UtcNow;
bool isArray = false;
this.DataType = ComUtils.GetDataTypeId(element.DataType, out isArray);
this.ValueRank = (isArray)?ValueRanks.OneOrMoreDimensions:ValueRanks.Scalar;
this.AccessLevel = AccessLevels.None;
if ((element.AccessRights & OpcRcw.Da.Constants.OPC_READABLE) != 0)
{
this.AccessLevel |= AccessLevels.CurrentRead;
}
if ((element.AccessRights & OpcRcw.Da.Constants.OPC_WRITEABLE) != 0)
{
this.AccessLevel |= AccessLevels.CurrentWrite;
}
this.UserAccessLevel = this.AccessLevel;
this.MinimumSamplingInterval = element.ScanRate;
}
/// <summary>
/// Gets the result for the read operayoin.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="item">The item.</param>
/// <param name="nodeToRead">The node to read.</param>
/// <param name="value">The value.</param>
/// <param name="diagnosticsMasks">The diagnostics masks.</param>
/// <returns></returns>
public ServiceResult GetResult(
ISystemContext context,
HdaItemState item,
ReadValueId nodeToRead,
DataValue value,
DiagnosticsMasks diagnosticsMasks)
{
switch (nodeToRead.AttributeId)
{
case Attributes.Description:
{
string description = this.GetAttributeValue <string>(Constants.OPCHDA_DESCRIPTION, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = new LocalizedText(description);
}
break;
}
case Attributes.DataType:
{
short datatype = this.GetAttributeValue <short>(Constants.OPCHDA_DATA_TYPE, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = ComUtils.GetDataTypeId(datatype);
}
else
{
value.Value = DataTypeIds.BaseDataType;
value.StatusCode = StatusCodes.GoodLocalOverride;
}
break;
}
case Attributes.ValueRank:
{
short datatype = this.GetAttributeValue <short>(Constants.OPCHDA_DATA_TYPE, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = ComUtils.GetValueRank(datatype);
}
else
{
value.Value = ValueRanks.Any;
value.StatusCode = StatusCodes.GoodLocalOverride;
}
break;
}
case Attributes.Historizing:
{
bool archiving = this.GetAttributeValue <bool>(Constants.OPCHDA_ARCHIVING, value, false);
if (StatusCode.IsGood(value.StatusCode))
{
value.Value = archiving;
}
else
{
value.Value = false;
value.StatusCode = StatusCodes.GoodLocalOverride;
}
break;
}
default:
{
return(StatusCodes.BadAttributeIdInvalid);
}
}
// check if the attribute value is missing.
if (value.StatusCode == StatusCodes.BadNotFound)
{
return(StatusCodes.BadAttributeIdInvalid);
}
return(ApplyIndexRangeAndDataEncoding(context, nodeToRead, value));
}
/// <summary>
/// Initializes a new instance of the <see cref="DaItemState"/> class.
/// </summary>
/// <param name="configuration">The configuration.</param>
/// <param name="itemId">The item id.</param>
/// <param name="attribute">The attribute.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public HdaAttributeState(
ComHdaClientConfiguration configuration,
string itemId,
HdaAttribute attribute,
ushort namespaceIndex)
:
base(null)
{
m_itemId = itemId;
m_attribute = attribute;
this.NodeId = HdaModelUtils.ConstructIdForHdaItemAttribute(itemId, attribute.Id, namespaceIndex);
this.SymbolicName = attribute.Id.ToString();
this.Description = attribute.Description;
this.AccessLevel = AccessLevels.CurrentRead;
this.UserAccessLevel = AccessLevels.CurrentRead;
this.MinimumSamplingInterval = MinimumSamplingIntervals.Indeterminate;
this.Historizing = false;
this.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
this.TypeDefinitionId = Opc.Ua.VariableTypeIds.PropertyType;
this.Value = null;
this.StatusCode = StatusCodes.BadWaitingForInitialData;
bool isConfigItem = false;
// handle built-in properties.
switch (attribute.Id)
{
default:
{
bool isArray = false;
this.BrowseName = new QualifiedName(this.SymbolicName, namespaceIndex);
this.DisplayName = attribute.Name;
this.DataType = ComUtils.GetDataTypeId(attribute.DataType, out isArray);
this.ValueRank = (isArray)?ValueRanks.OneDimension:ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_ENG_UNITS:
{
this.BrowseName = Opc.Ua.BrowseNames.EngineeringUnits;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.EUInformation;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_NORMAL_MAXIMUM:
{
this.BrowseName = Opc.Ua.BrowseNames.EURange;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Range;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_HIGH_ENTRY_LIMIT:
{
this.BrowseName = Opc.Ua.BrowseNames.InstrumentRange;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Range;
this.ValueRank = ValueRanks.Scalar;
break;
}
case Constants.OPCHDA_STEPPED:
{
this.BrowseName = Opc.Ua.BrowseNames.Stepped;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Boolean;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_DERIVE_EQUATION:
{
this.BrowseName = Opc.Ua.BrowseNames.Definition;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.String;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_MIN_TIME_INT:
{
this.BrowseName = Opc.Ua.BrowseNames.MinTimeInterval;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Duration;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_MAX_TIME_INT:
{
this.BrowseName = Opc.Ua.BrowseNames.MaxTimeInterval;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Duration;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_EXCEPTION_DEV:
{
this.BrowseName = Opc.Ua.BrowseNames.ExceptionDeviation;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.Double;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
case Constants.OPCHDA_EXCEPTION_DEV_TYPE:
{
this.BrowseName = Opc.Ua.BrowseNames.ExceptionDeviationFormat;
this.DisplayName = this.BrowseName.Name;
this.DataType = Opc.Ua.DataTypeIds.ExceptionDeviationFormat;
this.ValueRank = ValueRanks.Scalar;
isConfigItem = true;
break;
}
}
// set the parent id.
NodeId parentId = null;
if (isConfigItem)
{
parentId = HdaParsedNodeId.Construct(HdaModelUtils.HdaItemConfiguration, itemId, null, namespaceIndex);
}
else
{
parentId = HdaModelUtils.ConstructIdForHdaItem(itemId, namespaceIndex);
}
this.AddReference(ReferenceTypeIds.HasProperty, true, parentId);
}