private void SetOperatorMI_Click(object sender, EventArgs e)
{
try
{
ContentFilterElement element = SelectedTag as ContentFilterElement;
if (element == null)
{
return;
}
FilterOperator op = element.FilterOperator;
if (!new FilterOperatorEditDlg().ShowDialog(ref op))
{
return;
}
element.FilterOperator = op;
UpdateItem(ItemsLV.SelectedItems[0], element);
AdjustColumns();
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
public void InList(object operandFirst1, object operandFirst2, object operandFirst3, object operandFirst4, object expectedResult)
{
LiteralOperand loperand1 = new LiteralOperand();
LiteralOperand loperand2 = new LiteralOperand();
LiteralOperand loperand3 = new LiteralOperand();
LiteralOperand loperand4 = new LiteralOperand();
loperand1.Value = new Variant(operandFirst1);
loperand2.Value = new Variant(operandFirst2);
loperand3.Value = new Variant(operandFirst3);
loperand4.Value = new Variant(operandFirst4);
ContentFilterElement filterElement = new ContentFilterElement();
filterElement.FilterOperator = FilterOperator.InList;
filterElement.SetOperands(new List <LiteralOperand>()
{
loperand1, loperand2, loperand3, loperand4
});
Filter.WhereClause.Elements = new[] { filterElement };
// apply filter.
object result = Filter.WhereClause.Evaluate(FilterContext, TestFilterTarget);
Assert.AreEqual(expectedResult, result);
}
public void BinaryFilterOperators(object operandFirst1, object operandFirst2, FilterOperator filterOp, object expectedResult)
{
LiteralOperand loperand1 = new LiteralOperand();
LiteralOperand loperand2 = new LiteralOperand();
loperand1.Value = new Variant(operandFirst1);
if (filterOp == FilterOperator.Cast)
{
NodeId uintNoid = new NodeId(operandFirst2, 0);
loperand2.Value = new Variant(uintNoid);
}
else
{
loperand2.Value = new Variant(operandFirst2);
}
ContentFilterElement filterElement = new ContentFilterElement();
filterElement.FilterOperator = filterOp;
filterElement.SetOperands(new List <LiteralOperand>()
{
loperand1, loperand2
});
Filter.WhereClause.Elements = new[] { filterElement };
// apply filter.
object result = Filter.WhereClause.Evaluate(FilterContext, TestFilterTarget);
Assert.AreEqual(expectedResult, result);
}
/// <summary>
/// Returns the where clause defined by the filter declaration.
/// </summary>
public ContentFilter GetWhereClause()
{
ContentFilter whereClause = new ContentFilter();
ContentFilterElement element1 = whereClause.Push(FilterOperator.OfType, EventTypeId);
EventFilter filter = new EventFilter();
foreach (FilterDeclarationField field in Fields)
{
if (field.FilterEnabled)
{
SimpleAttributeOperand operand1 = new SimpleAttributeOperand();
operand1.TypeDefinitionId = field.InstanceDeclaration.RootTypeId;
operand1.AttributeId = (field.InstanceDeclaration.NodeClass == NodeClass.Object) ? Attributes.NodeId : Attributes.Value;
operand1.BrowsePath = field.InstanceDeclaration.BrowsePath;
LiteralOperand operand2 = new LiteralOperand();
operand2.Value = field.FilterValue;
ContentFilterElement element2 = whereClause.Push(field.FilterOperator, operand1, operand2);
element1 = whereClause.Push(FilterOperator.And, element1, element2);
}
}
return(whereClause);
}
public void NonBoolWithUnary(object operandFirst1, object operandFirst2, FilterOperator filterOp1, FilterOperator filterOp2, object expectedResult)
{
// Setup the First ContentfilterElement (the BitwiseOr or BitwiseAnd filter operation)
LiteralOperand loperand1 = new LiteralOperand();
LiteralOperand loperand2 = new LiteralOperand();
loperand1.Value = new Variant(operandFirst1);
if (filterOp1 == FilterOperator.Cast)
{
NodeId uintNoid = new NodeId(operandFirst2, 0);
loperand2.Value = new Variant(uintNoid);
}
else
{
loperand2.Value = new Variant(operandFirst2);
}
ContentFilterElement filterElement1 = new ContentFilterElement();
filterElement1.FilterOperator = filterOp1;
filterElement1.SetOperands(new List<FilterOperand>() { loperand1, loperand2 });
// Setup the Second ContentfilterElement
ElementOperand elementOperand = new ElementOperand();
elementOperand.Index = 1; // link to filterElement1
ContentFilterElement filterElement2 = new ContentFilterElement();
filterElement2.FilterOperator = filterOp2;
filterElement2.SetOperands(new List<FilterOperand>() { elementOperand });
Filter.WhereClause.Elements = new[] { filterElement2, filterElement1 };
// apply filter.
object result = Filter.WhereClause.Evaluate(FilterContext, TestFilterTarget);
Assert.AreEqual(expectedResult, result);
}
private void EditValueMI_Click(object sender, EventArgs e)
{
try
{
ContentFilterElement element = SelectedTag as ContentFilterElement;
if (element == null)
{
return;
}
List <FilterOperand> operands = element.GetOperands();
if (operands.Count != 2)
{
return;
}
LiteralOperand literal = operands[1] as LiteralOperand;
if (literal == null)
{
return;
}
// get the current value.
object currentValue = literal.Value.Value;
if (currentValue == null)
{
currentValue = String.Empty;
}
// edit the value.
object value = new SimpleValueEditDlg().ShowDialog(currentValue, currentValue.GetType());
if (value == null)
{
return;
}
// update value.
literal.Value = new Variant(value);
ContentFilter filter = GetFilter();
Update(filter);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <see cref="BaseListCtrl.UpdateItem" />
protected override void UpdateItem(ListViewItem listItem, object item, int index)
{
ContentFilterElement element = item as ContentFilterElement;
if (element == null)
{
base.UpdateItem(listItem, item);
return;
}
listItem.SubItems[0].Text = String.Format("[{0}]", index);
listItem.SubItems[1].Text = String.Format("{0}", element.ToString(m_session.NodeCache));
listItem.Tag = element;
}
public void UnaryFilterOperators(object operandFirst1, FilterOperator filterOp, object expectedResult)
{
LiteralOperand loperand1 = new LiteralOperand();
loperand1.Value = new Variant(operandFirst1);
ContentFilterElement filterElement = new ContentFilterElement();
filterElement.FilterOperator = filterOp;
filterElement.SetOperands(new List<LiteralOperand>() { loperand1 });
Filter.WhereClause.Elements = new[] { filterElement };
// apply filter.
object result = Filter.WhereClause.Evaluate(FilterContext, TestFilterTarget);
Assert.AreEqual(expectedResult, result);
}
/// <summary>
/// Returns the list of elements in the control.
/// </summary>
public List <ContentFilterElement> GetElements()
{
List <ContentFilterElement> elements = new List <ContentFilterElement>();
for (int ii = 0; ii < ItemsLV.Items.Count; ii++)
{
ContentFilterElement element = ItemsLV.Items[ii].Tag as ContentFilterElement;
if (element != null)
{
elements.Add(element);
}
}
return(elements);
}
/// <summary>
/// Returns the filter in the control.
/// </summary>
public ContentFilter GetFilter()
{
ContentFilter filter = new ContentFilter();
for (int ii = 0; ii < ItemsLV.Items.Count; ii++)
{
ContentFilterElement element = ItemsLV.Items[ii].Tag as ContentFilterElement;
if (element != null)
{
filter.Elements.Add(element);
}
}
return(filter);
}
/// <summary>
/// Convert to service model
/// </summary>
/// <param name="model"></param>
/// <param name="encoder"></param>
/// <returns></returns>
public static ContentFilterElementModel Encode(this IVariantEncoder encoder,
ContentFilterElement model)
{
if (model == null)
{
return(null);
}
return(new ContentFilterElementModel {
FilterOperands = model.FilterOperands
.Select(e => e.Body)
.Cast <FilterOperand>()
.Select(o => encoder.Encode(o))
.ToList(),
FilterOperator = model.FilterOperator.ToServiceType()
});
}
private void CreateElementNotMI_Click(object sender, EventArgs e)
{
try {
if (ItemsLV.SelectedItems.Count != 1)
{
return;
}
ContentFilterElement element1 = ItemsLV.SelectedItems[0].Tag as ContentFilterElement;
ContentFilter filter = GetFilter();
filter.Push(FilterOperator.Not, element1);
Update(filter);
} catch (Exception exception) {
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private static void QueryFirstCall(Session session)
{
ViewDescription vd = new ViewDescription();
vd.ViewId = 5000;
vd.ViewVersion = 0;
NodeTypeDescriptionCollection nt = new NodeTypeDescriptionCollection();
NodeTypeDescription ntd = new NodeTypeDescription();
ExpandedNodeId enid = new ExpandedNodeId("ns=3;s=AirConditioner_1");
ntd.TypeDefinitionNode = enid;
nt.Add(ntd);
ContentFilterElement cfe = new ContentFilterElement();
ContentFilterElementCollection cfec = new ContentFilterElementCollection();
cfec.Add(cfe);
ContentFilter cf = new ContentFilter();
cf.Elements = cfec;
QueryDataSetCollection qdsc = new QueryDataSetCollection();
byte[] cp = new byte[100];
ParsingResultCollection prc = new ParsingResultCollection();
DiagnosticInfoCollection dic = new DiagnosticInfoCollection();
ContentFilterResult cfr = new ContentFilterResult();
try
{
var rs = session.QueryFirst(null, vd, nt, cf, 1000, 1000, out qdsc, out cp, out prc, out dic, out cfr);
}
catch (Exception eX)
{
Console.WriteLine("EXCEPTION: QueryFirst : {0}", eX.Message);
}
}
/// <summary>
/// Returns the subscription filter to use.
/// </summary>
public EventFilter GetFilter()
{
ContentFilter whereClause = new ContentFilter();
ContentFilterElement element1 = whereClause.Push(FilterOperator.OfType, EventTypeId);
EventFilter filter = new EventFilter();
for (int ii = 0; ii < Fields.Count; ii++)
{
filter.SelectClauses.Add(Fields[ii].Operand);
if (Fields[ii].FilterValue != Variant.Null)
{
LiteralOperand operand = new LiteralOperand();
operand.Value = Fields[ii].FilterValue;
ContentFilterElement element2 = whereClause.Push(Fields[ii].FilterOperator, Fields[ii].Operand, operand);
element1 = whereClause.Push(FilterOperator.And, element1, element2);
}
}
filter.WhereClause = whereClause;
return(filter);
}
private void SelectNodeMI_Click(object sender, EventArgs e)
{
try
{
ReferenceDescription reference = new SelectNodeDlg().ShowDialog(m_browser, ObjectTypes.BaseEventType);
if (reference != null)
{
Node node = m_session.NodeCache.Find(reference.NodeId) as Node;
if (node == null)
{
return;
}
ContentFilterElement element = null;
// build the relative path.
QualifiedNameCollection browsePath = new QualifiedNameCollection();
NodeId typeId = m_session.NodeCache.BuildBrowsePath(node, browsePath);
switch (node.NodeClass)
{
case NodeClass.Variable:
{
IVariable variable = node as IVariable;
if (variable == null)
{
break;
}
// create attribute operand.
SimpleAttributeOperand attribute = new SimpleAttributeOperand(
m_session.FilterContext,
typeId,
browsePath);
// create default value.
object value = GuiUtils.GetDefaultValue(variable.DataType, variable.ValueRank);
// create attribute filter.
element = m_filter.Push(FilterOperator.Equals, attribute, value);
break;
}
case NodeClass.Object:
{
// create attribute operand.
SimpleAttributeOperand attribute = new SimpleAttributeOperand(
m_session.FilterContext,
typeId,
browsePath);
attribute.AttributeId = Attributes.NodeId;
// create attribute filter.
element = m_filter.Push(FilterOperator.IsNull, attribute);
break;
}
case NodeClass.ObjectType:
{
element = m_filter.Push(FilterOperator.OfType, node.NodeId);
break;
}
default:
{
throw new ArgumentException("Selected an invalid node.");
}
}
// add element.
if (element != null)
{
AddItem(element);
AdjustColumns();
}
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <summary>
/// Returns the where clause defined by the filter declaration.
/// </summary>
private ContentFilter GetWhereClause()
{
ContentFilter whereClause = new ContentFilter();
ContentFilterElement element1 = null;
// filter by source.
if (SelectedSources != null && SelectedSources.Count > 0)
{
SimpleAttributeOperand operand1 = new SimpleAttributeOperand();
operand1.TypeDefinitionId = Opc.Ua.ObjectTypeIds.BaseEventType;
operand1.AttributeId = Attributes.Value;
operand1.BrowsePath.Add(new QualifiedName(Opc.Ua.BrowseNames.SourceNode));
for (int ii = 0; ii < SelectedSources.Count; ii++)
{
LiteralOperand operand2 = new LiteralOperand();
operand2.Value = SelectedSources[ii];
ContentFilterElement element2 = whereClause.Push(FilterOperator.Equals, operand1, operand2);
element1 = (element1 != null)?whereClause.Push(FilterOperator.Or, element1, element2):element2;
}
}
// add condition/tracking categories if no other categories selected.
if (RevisedCategories == null || RevisedCategories.Count == 0)
{
if (EventTypes == (OpcRcw.Ae.Constants.SIMPLE_EVENT | OpcRcw.Ae.Constants.TRACKING_EVENT))
{
ContentFilterElement element2 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.ConditionType);
ContentFilterElement element3 = whereClause.Push(FilterOperator.Not, element2);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element3) : element3;
}
else if (EventTypes == (OpcRcw.Ae.Constants.SIMPLE_EVENT | OpcRcw.Ae.Constants.CONDITION_EVENT))
{
ContentFilterElement element2 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.AuditEventType);
ContentFilterElement element3 = whereClause.Push(FilterOperator.Not, element2);
ContentFilterElement element4 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.TransitionEventType);
ContentFilterElement element5 = whereClause.Push(FilterOperator.Not, element4);
ContentFilterElement element6 = whereClause.Push(FilterOperator.Or, element3, element5);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element6) : element6;
}
else if (EventTypes == (OpcRcw.Ae.Constants.TRACKING_EVENT | OpcRcw.Ae.Constants.CONDITION_EVENT))
{
ContentFilterElement element2 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.AuditEventType);
ContentFilterElement element3 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.TransitionEventType);
ContentFilterElement element4 = whereClause.Push(FilterOperator.Or, element2, element3);
ContentFilterElement element5 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.ConditionType);
ContentFilterElement element6 = whereClause.Push(FilterOperator.Or, element4, element5);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element6) : element6;
}
else if (EventTypes == OpcRcw.Ae.Constants.TRACKING_EVENT)
{
ContentFilterElement element2 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.AuditEventType);
ContentFilterElement element3 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.TransitionEventType);
ContentFilterElement element4 = whereClause.Push(FilterOperator.Or, element2, element3);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element4) : element4;
}
else if (EventTypes == OpcRcw.Ae.Constants.CONDITION_EVENT)
{
ContentFilterElement element2 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.ConditionType);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element2) : element2;
}
else if (EventTypes == OpcRcw.Ae.Constants.SIMPLE_EVENT)
{
ContentFilterElement element2 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.AuditEventType);
ContentFilterElement element3 = whereClause.Push(FilterOperator.Not, element2);
ContentFilterElement element4 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.TransitionEventType);
ContentFilterElement element5 = whereClause.Push(FilterOperator.Not, element4);
ContentFilterElement element6 = whereClause.Push(FilterOperator.Or, element3, element5);
ContentFilterElement element7 = whereClause.Push(FilterOperator.OfType, Opc.Ua.ObjectTypeIds.ConditionType);
ContentFilterElement element8 = whereClause.Push(FilterOperator.Not, element7);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element8) : element8;
}
}
// filter by event type.
if (RevisedCategories.Count > 0)
{
SimpleAttributeOperand operand1 = new SimpleAttributeOperand();
operand1.TypeDefinitionId = Opc.Ua.ObjectTypeIds.BaseEventType;
operand1.AttributeId = Attributes.Value;
operand1.BrowsePath.Add(new QualifiedName(Opc.Ua.BrowseNames.EventType));
ContentFilterElement element3 = null;
for (int ii = 0; ii < RevisedCategories.Count; ii++)
{
ContentFilterElement element2 = whereClause.Push(FilterOperator.Equals, operand1, RevisedCategories[ii].TypeId);
element3 = (element3 != null) ? whereClause.Push(FilterOperator.Or, element2, element3) : element2;
}
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element3) : element3;
}
// filter by severity.
if (LowSeverity > 1 || HighSeverity < 1000)
{
SimpleAttributeOperand operand1 = new SimpleAttributeOperand();
operand1.TypeDefinitionId = Opc.Ua.ObjectTypeIds.BaseEventType;
operand1.AttributeId = Attributes.Value;
operand1.BrowsePath.Add(new QualifiedName(Opc.Ua.BrowseNames.Severity));
if (LowSeverity > 1)
{
LiteralOperand operand2 = new LiteralOperand();
operand2.Value = LowSeverity;
ContentFilterElement element2 = whereClause.Push(FilterOperator.GreaterThanOrEqual, operand1, operand2);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element2) : element2;
}
if (HighSeverity < 1000)
{
LiteralOperand operand2 = new LiteralOperand();
operand2.Value = HighSeverity;
ContentFilterElement element2 = whereClause.Push(FilterOperator.LessThanOrEqual, operand1, operand2);
element1 = (element1 != null) ? whereClause.Push(FilterOperator.And, element1, element2) : element2;
}
}
return(whereClause);
}
/// <summary>
/// Constructs the event filter for the subscription.
/// </summary>
/// <returns>The event filter.</returns>
public EventFilter ConstructFilter(Session session)
{
EventFilter filter = new EventFilter();
// the select clauses specify the values returned with each event notification.
filter.SelectClauses = SelectClauses;
// the where clause restricts the events returned by the server.
// it works a lot like the WHERE clause in a SQL statement and supports
// arbitrary expession trees where the operands are literals or event fields.
ContentFilter whereClause = new ContentFilter();
// the code below constructs a filter that looks like this:
// (Severity >= X OR LastSeverity >= X) AND (SuppressedOrShelved == False) AND (OfType(A) OR OfType(B))
// add the severity.
ContentFilterElement element1 = null;
ContentFilterElement element2 = null;
if (Severity > EventSeverity.Min)
{
// select the Severity property of the event.
SimpleAttributeOperand operand1 = new SimpleAttributeOperand();
operand1.TypeDefinitionId = ObjectTypeIds.BaseEventType;
operand1.BrowsePath.Add(BrowseNames.Severity);
operand1.AttributeId = Attributes.Value;
// specify the value to compare the Severity property with.
LiteralOperand operand2 = new LiteralOperand();
operand2.Value = new Variant((ushort)Severity);
// specify that the Severity property must be GreaterThanOrEqual the value specified.
element1 = whereClause.Push(FilterOperator.GreaterThanOrEqual, operand1, operand2);
}
// add the event types.
if (EventTypes != null && EventTypes.Count > 0)
{
element2 = null;
// save the last element.
for (int ii = 0; ii < EventTypes.Count; ii++)
{
// for this example uses the 'OfType' operator to limit events to thoses with specified event type.
LiteralOperand operand1 = new LiteralOperand();
operand1.Value = new Variant(EventTypes[ii]);
ContentFilterElement element3 = whereClause.Push(FilterOperator.OfType, operand1);
// need to chain multiple types together with an OR clause.
if (element2 != null)
{
element2 = whereClause.Push(FilterOperator.Or, element2, element3);
}
else
{
element2 = element3;
}
}
// need to link the set of event types with the previous filters.
if (element1 != null)
{
whereClause.Push(FilterOperator.And, element1, element2);
}
}
filter.WhereClause = whereClause;
// return filter.
return(filter);
}
/// <summary>
/// Monitoring for an event source starts if it is required.
/// </summary>
public async Task MonitorEventsAsync(CancellationToken ct)
{
bool sessionLocked = false;
try
{
try
{
sessionLocked = await LockSessionAsync().ConfigureAwait(false);
// if the session is not connected or shutdown in progress, return
if (!sessionLocked || ct.IsCancellationRequested || State != SessionState.Connected)
{
return;
}
}
catch (Exception)
{
throw;
}
// ensure all nodes in all subscriptions of this session are monitored.
foreach (var opcEventSubscription in OpcEventSubscriptions)
{
// create the subscription, if it is not yet there.
if (opcEventSubscription.OpcUaClientSubscription == null)
{
opcEventSubscription.OpcUaClientSubscription = CreateSubscription(opcEventSubscription.RequestedPublishingInterval, out int revisedPublishingInterval);
opcEventSubscription.PublishingInterval = revisedPublishingInterval;
Logger.Information($"Create Event subscription on endpoint '{EndpointUrl}' requested OPC publishing interval is {opcEventSubscription.RequestedPublishingInterval} ms. (revised: {revisedPublishingInterval} ms)");
}
// process all unmonitored events.
var unmonitoredEvents = opcEventSubscription.OpcMonitoredItems.Where(i => (i.State == OpcMonitoredItemState.Unmonitored || i.State == OpcMonitoredItemState.UnmonitoredNamespaceUpdateRequested));
int additionalMonitoredEventsCount = 0;
int monitoredEventsCount = 0;
bool haveUnmonitoredEvents = false;
if (unmonitoredEvents.Count() != 0)
{
haveUnmonitoredEvents = true;
monitoredEventsCount = opcEventSubscription.OpcMonitoredItems.Count(i => (i.State == OpcMonitoredItemState.Monitored));
Logger.Information($"Start monitoring events on endpoint '{EndpointUrl}'. Currently monitoring {monitoredEventsCount} events.");
}
// init perf data
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
foreach (var unmonitoredEvent in unmonitoredEvents)
{
// if the session is not connected or a shutdown is in progress, we stop trying and wait for the next cycle
if (ct.IsCancellationRequested || State != SessionState.Connected)
{
break;
}
NodeId currentNodeId = null;
try
{
// update the namespace of the node if requested. there are two cases where this is requested:
// 1) publishing requests via the OPC server method are raised using a NodeId format. for those
// the NodeId format is converted into an ExpandedNodeId format
// 2) ExpandedNodeId configuration file entries do not have at parsing time a session to get
// the namespace index. this is set now.
if (unmonitoredEvent.State == OpcMonitoredItemState.UnmonitoredNamespaceUpdateRequested)
{
if (unmonitoredEvent.ConfigType == OpcMonitoredItemConfigurationType.ExpandedNodeId)
{
ExpandedNodeId expandedNodeId = ExpandedNodeId.Parse(unmonitoredEvent.Id);
int namespaceIndex = _namespaceTable.GetIndex(expandedNodeId.NamespaceUri);
if (namespaceIndex < 0)
{
Logger.Information($"The namespace URI of node '{expandedNodeId.ToString()}' can be not mapped to a namespace index.");
}
else
{
unmonitoredEvent.IdAsExpandedNodeId = expandedNodeId;
}
}
if (unmonitoredEvent.ConfigType == OpcMonitoredItemConfigurationType.NodeId)
{
NodeId nodeId = NodeId.Parse(unmonitoredEvent.Id);
string namespaceUri = _namespaceTable.ToArray().ElementAtOrDefault(nodeId.NamespaceIndex);
if (string.IsNullOrEmpty(namespaceUri))
{
Logger.Information($"The namespace index of node '{nodeId.ToString()}' is invalid and the node format can not be updated.");
}
else
{
unmonitoredEvent.IdAsExpandedNodeId = new ExpandedNodeId(nodeId.Identifier, nodeId.NamespaceIndex, namespaceUri, 0);
unmonitoredEvent.ConfigType = OpcMonitoredItemConfigurationType.ExpandedNodeId;
}
}
unmonitoredEvent.State = OpcMonitoredItemState.Unmonitored;
}
// lookup namespace index if ExpandedNodeId format has been used and build NodeId identifier.
if (unmonitoredEvent.ConfigType == OpcMonitoredItemConfigurationType.ExpandedNodeId)
{
ExpandedNodeId expandedNodeId = ExpandedNodeId.Parse(unmonitoredEvent.Id);
int namespaceIndex = _namespaceTable.GetIndex(expandedNodeId.NamespaceUri);
if (namespaceIndex < 0)
{
Logger.Warning($"Syntax or namespace URI of ExpandedNodeId '{expandedNodeId.ToString()}' is invalid and will be ignored.");
continue;
}
unmonitoredEvent.IdAsNodeId = new NodeId(expandedNodeId.Identifier, expandedNodeId.NamespaceIndex);
currentNodeId = unmonitoredEvent.IdAsNodeId;
}
else
{
NodeId nodeId = NodeId.Parse(unmonitoredEvent.Id);
string namespaceUri = _namespaceTable.ToArray().ElementAtOrDefault(nodeId.NamespaceIndex);
if (string.IsNullOrEmpty(namespaceUri))
{
Logger.Information($"The namespace index of node '{nodeId.ToString()}' is invalid and the node format can not be updated.");
}
else
{
unmonitoredEvent.IdAsExpandedNodeId = new ExpandedNodeId(nodeId.Identifier, nodeId.NamespaceIndex, namespaceUri, 0);
currentNodeId = nodeId;
}
}
// if configured, get the key for the node, otherwise use the nodeId
Node node;
if (string.IsNullOrEmpty(unmonitoredEvent.Key))
{
if (FetchOpcNodeDisplayName == true)
{
node = OpcUaClientSession.ReadNode(currentNodeId);
unmonitoredEvent.Key = node.DisplayName.Text ?? currentNodeId.ToString();
}
else
{
unmonitoredEvent.Key = currentNodeId.ToString();
}
}
// resolve all node and namespace references in the select and where clauses
EventFilter eventFilter = new EventFilter();
foreach (var selectClause in unmonitoredEvent.EventConfiguration.SelectClauses)
{
SimpleAttributeOperand simpleAttributeOperand = new SimpleAttributeOperand();
simpleAttributeOperand.AttributeId = selectClause.AttributeId.ResolveAttributeId();
simpleAttributeOperand.IndexRange = selectClause.IndexRange;
NodeId typeId = selectClause.TypeId.ToNodeId(_namespaceTable);
simpleAttributeOperand.TypeDefinitionId = new NodeId(typeId);
QualifiedNameCollection browsePaths = new QualifiedNameCollection();
foreach (var browsePath in selectClause.BrowsePaths)
{
browsePaths.Add(QualifiedName.Parse(browsePath));
}
simpleAttributeOperand.BrowsePath = browsePaths;
eventFilter.SelectClauses.Add(simpleAttributeOperand);
}
foreach (var whereClauseElement in unmonitoredEvent.EventConfiguration.WhereClause)
{
ContentFilterElement contentFilterElement = new ContentFilterElement();
contentFilterElement.FilterOperator = whereClauseElement.Operator.ResolveFilterOperator();
switch (contentFilterElement.FilterOperator)
{
case FilterOperator.OfType:
case FilterOperator.InView:
if (whereClauseElement.Operands.Count != 1)
{
Logger.Error($"The where clause element '{whereClauseElement.ToString()}' must contain 1 operands.");
continue;
}
FilterOperand[] filterOperands = new FilterOperand[1];
TypeInfo typeInfo = new TypeInfo(BuiltInType.NodeId, ValueRanks.Scalar);
filterOperands[0] = whereClauseElement.Operands[0].GetOperand(typeInfo);
eventFilter.WhereClause.Push(contentFilterElement.FilterOperator, filterOperands);
break;
case FilterOperator.Equals:
case FilterOperator.IsNull:
case FilterOperator.GreaterThan:
case FilterOperator.LessThan:
case FilterOperator.GreaterThanOrEqual:
case FilterOperator.LessThanOrEqual:
case FilterOperator.Like:
case FilterOperator.Not:
case FilterOperator.Between:
case FilterOperator.InList:
case FilterOperator.And:
case FilterOperator.Or:
case FilterOperator.Cast:
case FilterOperator.BitwiseAnd:
case FilterOperator.BitwiseOr:
case FilterOperator.RelatedTo:
default:
Logger.Error($"The operator '{contentFilterElement.FilterOperator.ToString()}' is not supported.");
break;
}
}
// add the new monitored event.
IOpcUaMonitoredItem monitoredItem = new OpcUaMonitoredItem()
{
StartNodeId = currentNodeId,
AttributeId = Attributes.EventNotifier,
DisplayName = unmonitoredEvent.Key,
MonitoringMode = unmonitoredEvent.MonitoringMode,
SamplingInterval = 0,
QueueSize = unmonitoredEvent.QueueSize,
DiscardOldest = unmonitoredEvent.DiscardOldest,
Filter = eventFilter
};
monitoredItem.Notification += unmonitoredEvent.NotificationEventHandler;
opcEventSubscription.OpcUaClientSubscription.AddItem(monitoredItem);
unmonitoredEvent.OpcUaClientMonitoredItem = monitoredItem;
unmonitoredEvent.State = OpcMonitoredItemState.Monitored;
unmonitoredEvent.EndpointUrl = EndpointUrl;
Logger.Verbose($"Created monitored event for node '{currentNodeId.ToString()}' in subscription with id '{opcEventSubscription.OpcUaClientSubscription.Id}' on endpoint '{EndpointUrl}' (version: {NodeConfigVersion:X8})");
if (unmonitoredEvent.RequestedSamplingInterval != monitoredItem.SamplingInterval)
{
Logger.Information($"Sampling interval: requested: {unmonitoredEvent.RequestedSamplingInterval}; revised: {monitoredItem.SamplingInterval}");
unmonitoredEvent.SamplingInterval = monitoredItem.SamplingInterval;
}
if (additionalMonitoredEventsCount % 10000 == 0)
{
Logger.Information($"Now monitoring {monitoredEventsCount + additionalMonitoredEventsCount} events in subscription with id '{opcEventSubscription.OpcUaClientSubscription.Id}'");
}
}
catch (Exception e) when(e.GetType() == typeof(ServiceResultException))
{
ServiceResultException sre = (ServiceResultException)e;
switch ((uint)sre.Result.StatusCode)
{
case StatusCodes.BadSessionIdInvalid:
{
Logger.Information($"Session with Id {OpcUaClientSession.SessionId} is no longer available on endpoint '{EndpointUrl}'. Cleaning up.");
// clean up the session
InternalDisconnect();
break;
}
case StatusCodes.BadNodeIdInvalid:
case StatusCodes.BadNodeIdUnknown:
{
Logger.Error($"Failed to monitor node '{currentNodeId}' on endpoint '{EndpointUrl}'.");
Logger.Error($"OPC UA ServiceResultException is '{sre.Result}'. Please check your publisher configuration for this node.");
break;
}
default:
{
Logger.Error($"Unhandled OPC UA ServiceResultException '{sre.Result}' when monitoring node '{currentNodeId}' on endpoint '{EndpointUrl}'. Continue.");
break;
}
}
}
catch (Exception e)
{
Logger.Error(e, $"Failed to monitor node '{currentNodeId}' on endpoint '{EndpointUrl}'");
}
}
opcEventSubscription.OpcUaClientSubscription.SetPublishingMode(true);
opcEventSubscription.OpcUaClientSubscription.ApplyChanges();
stopWatch.Stop();
if (haveUnmonitoredEvents == true)
{
monitoredEventsCount = opcEventSubscription.OpcMonitoredItems.Count(i => (i.State == OpcMonitoredItemState.Monitored));
Logger.Information($"Done processing unmonitored events on endpoint '{EndpointUrl}' took {stopWatch.ElapsedMilliseconds} msec. Now monitoring {monitoredEventsCount} events in subscription with id '{opcEventSubscription.OpcUaClientSubscription.Id}'.");
}
}
}
catch (Exception e)
{
Logger.Error(e, "Exception");
}
finally
{
if (sessionLocked)
{
ReleaseSession();
}
}
}