/// <summary>
/// Updates the audit event.
/// </summary>
private void UpdateAuditEvent(AuditEventState instance, EventType eventType, ONEVENTSTRUCT e)
{
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ActionTimeStamp, instance.Time.Value, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Status, true, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ServerId, m_defaultContext.NamespaceUris.GetString(m_namespaceIndex), false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ClientUserId, e.szActorID, false);
}
private void OnRaiseSystemEvents(object state)
{
try {
var e = new SystemEventState(null);
e.Initialize(
SystemContext,
null,
EventSeverity.Medium,
new LocalizedText("Raising Events"));
e.SetChildValue(SystemContext, BrowseNames.SourceNode, ObjectIds.Server, false);
e.SetChildValue(SystemContext, BrowseNames.SourceName, "Internal", false);
Server.ReportEvent(e);
var ae = new AuditEventState(null);
ae.Initialize(
SystemContext,
null,
EventSeverity.Medium,
new LocalizedText("Events Raised"),
true,
DateTime.UtcNow);
ae.SetChildValue(SystemContext, BrowseNames.SourceNode, ObjectIds.Server, false);
ae.SetChildValue(SystemContext, BrowseNames.SourceName, "Internal", false);
Server.ReportEvent(ae);
}
catch (Exception e) {
Utils.Trace(e, "Unexpected error in OnRaiseSystemEvents");
}
}
/// <summary>
/// Creates an instance of an event.
/// </summary>
public BaseEventState CreateInstance(ServerSystemContext context, AeEventTypeState eventType)
{
BaseEventState instance = null;
switch (eventType.EventType.EventTypeMapping)
{
case EventTypeMapping.AlarmConditionType: { instance = new AlarmConditionState(null); break; }
case EventTypeMapping.AuditEventType: { instance = new AuditEventState(null); break; }
case EventTypeMapping.BaseEventType: { instance = new BaseEventState(null); break; }
case EventTypeMapping.DeviceFailureEventType: { instance = new DeviceFailureEventState(null); break; }
case EventTypeMapping.DiscreteAlarmType: { instance = new DiscreteAlarmState(null); break; }
case EventTypeMapping.NonExclusiveDeviationAlarmType: { instance = new NonExclusiveDeviationAlarmState(null); break; }
case EventTypeMapping.ExclusiveLevelAlarmType: { instance = new ExclusiveLevelAlarmState(null); break; }
case EventTypeMapping.LimitAlarmType: { instance = new LimitAlarmState(null); break; }
case EventTypeMapping.NonExclusiveLevelAlarmType: { instance = new NonExclusiveLevelAlarmState(null); break; }
case EventTypeMapping.OffNormalAlarmType: { instance = new OffNormalAlarmState(null); break; }
case EventTypeMapping.SystemEventType: { instance = new SystemEventState(null); break; }
case EventTypeMapping.TripAlarmType: { instance = new TripAlarmState(null); break; }
}
return(instance);
}
/// <inheritdoc/>
public void ReportAuditEvent(ISystemContext context, AuditEventState e)
{
if (Auditing == false)
{
// do not report auditing events if server Auditing flag is false
return;
}
ReportEvent(context, e);
}
/// <summary>
/// Initializes a session audit event.
/// </summary>
private void InitializeSessionAuditEvent(ServerSystemContext systemContext, AuditEventState e, TranslationInfo message)
{
e.Initialize(
systemContext,
null,
EventSeverity.MediumLow,
new LocalizedText(message),
true,
DateTime.UtcNow);
e.SetChildValue(systemContext, BrowseNames.SourceNode, m_sessionId, false);
e.SetChildValue(systemContext, BrowseNames.SourceName, m_sessionName, false);
e.SetChildValue(systemContext, BrowseNames.SessionId, m_sessionId, false);
e.SetChildValue(systemContext, BrowseNames.ServerId, m_server.ServerUris.GetString(0), false);
e.SetChildValue(systemContext, BrowseNames.ClientUserId, m_identity.DisplayName, false);
e.SetChildValue(systemContext, BrowseNames.ClientAuditEntryId, systemContext.OperationContext.AuditEntryId, false);
}
/// <summary>
/// Initializes a session audit event.
/// </summary>
private void InitializeSessionAuditEvent(ServerSystemContext systemContext, AuditEventState e, TranslationInfo message)
{
e.Initialize(
systemContext,
null,
EventSeverity.MediumLow,
new LocalizedText(message),
true,
DateTime.UtcNow);
e.SetChildValue(systemContext, BrowseNames.SourceNode, m_sessionId, false);
e.SetChildValue(systemContext, BrowseNames.SourceName, m_sessionName, false);
e.SetChildValue(systemContext, BrowseNames.SessionId, m_sessionId, false);
e.SetChildValue(systemContext, BrowseNames.ServerId, m_server.ServerUris.GetString(0), false);
e.SetChildValue(systemContext, BrowseNames.ClientUserId, m_identity.DisplayName, false);
e.SetChildValue(systemContext, BrowseNames.ClientAuditEntryId, systemContext.OperationContext.AuditEntryId, false);
}
/// <summary>
/// Constructs an event object from a notification.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="monitoredItem">The monitored item that produced the notification.</param>
/// <param name="notification">The notification.</param>
/// <param name="eventTypeMappings">Mapping between event types and known event types.</param>
/// <returns>
/// The event object. Null if the notification is not a valid event type.
/// </returns>
public static BaseEventState ConstructEvent(
Session session,
MonitoredItem monitoredItem,
EventFieldList notification,
Dictionary <NodeId, NodeId> eventTypeMappings)
{
// find the event type.
NodeId eventTypeId = FindEventType(monitoredItem, notification);
if (eventTypeId == null)
{
return(null);
}
// look up the known event type.
NodeId knownTypeId = null;
if (!eventTypeMappings.TryGetValue(eventTypeId, out knownTypeId))
{
// check for a known type
for (int jj = 0; jj < KnownEventTypes.Length; jj++)
{
if (KnownEventTypes[jj] == eventTypeId)
{
knownTypeId = eventTypeId;
eventTypeMappings.Add(eventTypeId, eventTypeId);
break;
}
}
// browse for the supertypes of the event type.
if (knownTypeId == null)
{
ReferenceDescriptionCollection supertypes = FormUtils.BrowseSuperTypes(session, eventTypeId, false);
// can't do anything with unknown types.
if (supertypes == null)
{
return(null);
}
// find the first supertype that matches a known event type.
for (int ii = 0; ii < supertypes.Count; ii++)
{
for (int jj = 0; jj < KnownEventTypes.Length; jj++)
{
if (KnownEventTypes[jj] == supertypes[ii].NodeId)
{
knownTypeId = KnownEventTypes[jj];
eventTypeMappings.Add(eventTypeId, knownTypeId);
break;
}
}
if (knownTypeId != null)
{
break;
}
}
}
}
if (knownTypeId == null)
{
return(null);
}
// all of the known event types have a UInt32 as identifier.
uint?id = knownTypeId.Identifier as uint?;
if (id == null)
{
return(null);
}
// construct the event based on the known event type.
BaseEventState e = null;
switch (id.Value)
{
case ObjectTypes.ConditionType: { e = new ConditionState(null); break; }
case ObjectTypes.DialogConditionType: { e = new DialogConditionState(null); break; }
case ObjectTypes.AlarmConditionType: { e = new AlarmConditionState(null); break; }
case ObjectTypes.ExclusiveLimitAlarmType: { e = new ExclusiveLimitAlarmState(null); break; }
case ObjectTypes.NonExclusiveLimitAlarmType: { e = new NonExclusiveLimitAlarmState(null); break; }
case ObjectTypes.AuditEventType: { e = new AuditEventState(null); break; }
case ObjectTypes.AuditUpdateMethodEventType: { e = new AuditUpdateMethodEventState(null); break; }
default:
{
e = new BaseEventState(null);
break;
}
}
// get the filter which defines the contents of the notification.
EventFilter filter = monitoredItem.Status.Filter as EventFilter;
// initialize the event with the values in the notification.
if (session is null)
{
return(null);
}
e.Update(session.SystemContext, filter.SelectClauses, notification);
// save the orginal notification.
e.Handle = notification;
return(e);
}
/// <summary>
/// Constructs an event object from a notification.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="monitoredItem">The monitored item that produced the notification.</param>
/// <param name="notification">The notification.</param>
/// <param name="eventTypeMappings">Mapping between event types and known event types.</param>
/// <returns>
/// The event object. Null if the notification is not a valid event type.
/// </returns>
public static BaseEventState ConstructEvent(
Session session,
MonitoredItem monitoredItem,
EventFieldList notification,
Dictionary <NodeId, NodeId> eventTypeMappings)
{
// find the event type.
var eventTypeId = FindEventType(monitoredItem, notification);
if (eventTypeId == null)
{
return(null);
}
// look up the known event type.
NodeId knownTypeId;
if (!eventTypeMappings.TryGetValue(eventTypeId, out knownTypeId))
{
// check for a known type
if (KnownEventTypes.Any(t => t == eventTypeId))
{
knownTypeId = eventTypeId;
eventTypeMappings.Add(eventTypeId, eventTypeId);
}
// browse for the supertypes of the event type.
if (knownTypeId == null)
{
var supertypes = BrowseSuperTypes(session, eventTypeId, false);
// can't do anything with unknown types.
if (supertypes == null)
{
return(null);
}
// find the first supertype that matches a known event type.
foreach (var t in supertypes)
{
foreach (var nodeId in KnownEventTypes)
{
if (nodeId == t.NodeId)
{
knownTypeId = nodeId;
eventTypeMappings.Add(eventTypeId, knownTypeId);
break;
}
}
if (knownTypeId != null)
{
break;
}
}
}
}
if (knownTypeId == null)
{
return(null);
}
// all of the known event types have a UInt32 as identifier.
var id = knownTypeId.Identifier as uint?;
if (id == null)
{
return(null);
}
// construct the event based on the known event type.
BaseEventState e;
switch (id.Value)
{
case ObjectTypes.ConditionType: { e = new ConditionState(null); break; }
case ObjectTypes.DialogConditionType: { e = new DialogConditionState(null); break; }
case ObjectTypes.AlarmConditionType: { e = new AlarmConditionState(null); break; }
case ObjectTypes.ExclusiveLimitAlarmType: { e = new ExclusiveLimitAlarmState(null); break; }
case ObjectTypes.NonExclusiveLimitAlarmType: { e = new NonExclusiveLimitAlarmState(null); break; }
case ObjectTypes.AuditEventType: { e = new AuditEventState(null); break; }
case ObjectTypes.AuditUpdateMethodEventType: { e = new AuditUpdateMethodEventState(null); break; }
default:
{
e = new BaseEventState(null);
break;
}
}
// get the filter which defines the contents of the notification.
var filter = monitoredItem.Status.Filter as EventFilter;
// initialize the event with the values in the notification.
if (filter != null)
{
e.Update(session.SystemContext, filter.SelectClauses, notification);
}
// save the orginal notification.
e.Handle = notification;
return(e);
}
private void MonitorMethodUpdateNotification(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
{
try
{
if (!(e.NotificationValue is EventFieldList notification))
{
return;
}
NodeId eventTypeId = null;
if (!(monitoredItem.Status.Filter is EventFilter filter))
{
return;
}
for (int index = 0; index < filter.SelectClauses.Count; index++)
{
SimpleAttributeOperand simpleAttributeOperand = filter.SelectClauses[index];
if (simpleAttributeOperand.BrowsePath.Count != 1 ||
simpleAttributeOperand.BrowsePath[0] != BrowseNames.EventType)
{
continue;
}
eventTypeId = notification.EventFields[index].Value as NodeId;
}
// look up the known event type.
Dictionary <NodeId, NodeId> eventTypeMappings = new Dictionary <NodeId, NodeId>();
if (eventTypeId == null || NodeId.IsNull(eventTypeId))
{
return;
}
if (!eventTypeMappings.TryGetValue(eventTypeId, out NodeId knownTypeId))
{
// check for a known type
if (KnownEventTypes.Any(nodeId => nodeId == eventTypeId))
{
knownTypeId = eventTypeId;
eventTypeMappings.Add(eventTypeId, eventTypeId);
}
// browse for the supertypes of the event type.
if (knownTypeId == null)
{
ReferenceDescriptionCollection supertypes = new ReferenceDescriptionCollection();
// find all of the children of the field.
BrowseDescription nodeToBrowse = new BrowseDescription
{
NodeId = eventTypeId,
BrowseDirection = BrowseDirection.Inverse,
ReferenceTypeId = ReferenceTypeIds.HasSubtype,
IncludeSubtypes = false, // more efficient to use IncludeSubtypes=False when possible.
NodeClassMask = 0, // the HasSubtype reference already restricts the targets to Types.
ResultMask = (uint)BrowseResultMask.All
};
ReferenceDescriptionCollection
references = _applicationInstanceManager.Browse(nodeToBrowse);
while (references != null && references.Count > 0)
{
// should never be more than one supertype.
supertypes.Add(references[0]);
// only follow references within this server.
if (references[0].NodeId.IsAbsolute)
{
break;
}
// get the references for the next level up.
nodeToBrowse.NodeId = (NodeId)references[0].NodeId;
references = _applicationInstanceManager.Browse(nodeToBrowse);
}
// find the first super type that matches a known event type.
foreach (ReferenceDescription referenceDescription in supertypes)
{
foreach (NodeId nodeId in KnownEventTypes)
{
if (nodeId != referenceDescription.NodeId)
{
continue;
}
knownTypeId = nodeId;
eventTypeMappings.Add(eventTypeId, knownTypeId);
break;
}
if (knownTypeId != null)
{
break;
}
}
}
}
if (knownTypeId == null)
{
return;
}
// all of the known event types have a UInt32 as identifier.
uint?id = knownTypeId.Identifier as uint?;
if (id == null)
{
return;
}
// construct the event based on the known event type.
BaseEventState baseEventState = null;
switch (id.Value)
{
case ObjectTypes.ConditionType:
{
baseEventState = new ConditionState(null);
break;
}
case ObjectTypes.DialogConditionType:
{
baseEventState = new DialogConditionState(null);
break;
}
case ObjectTypes.AlarmConditionType:
{
baseEventState = new AlarmConditionState(null);
break;
}
case ObjectTypes.ExclusiveLimitAlarmType:
{
baseEventState = new ExclusiveLimitAlarmState(null);
break;
}
case ObjectTypes.NonExclusiveLimitAlarmType:
{
baseEventState = new NonExclusiveLimitAlarmState(null);
break;
}
case ObjectTypes.AuditEventType:
{
baseEventState = new AuditEventState(null);
break;
}
case ObjectTypes.AuditUpdateMethodEventType:
{
baseEventState = new AuditUpdateMethodEventState(null);
break;
}
default:
{
baseEventState = new BaseEventState(null);
break;
}
}
// get the filter which defines the contents of the notification.
filter = monitoredItem.Status.Filter as EventFilter;
// initialize the event with the values in the notification.
baseEventState.Update(_applicationInstanceManager.Session.SystemContext, filter.SelectClauses,
notification);
// save the original notification.
baseEventState.Handle = notification;
// construct the audit object.
if (baseEventState is AuditUpdateMethodEventState audit)
{
// look up the condition type metadata in the local cache.
string sourceName = "";
if (audit.SourceName.Value != null)
{
sourceName = Utils.Format("{0}", audit.SourceName.Value);
}
string type = "";
if (audit.TypeDefinitionId != null)
{
type = Utils.Format("{0}",
_applicationInstanceManager.Session.NodeCache.Find(audit.TypeDefinitionId));
}
string method = "";
if (audit.MethodId != null)
{
method = Utils.Format("{0}",
_applicationInstanceManager.Session.NodeCache.Find(
BaseVariableState.GetValue(audit.MethodId)));
}
string status = "";
if (audit.Status != null)
{
status = Utils.Format("{0}", audit.Status.Value);
}
string time = "";
if (audit.Time != null)
{
time = Utils.Format("{0:HH:mm:ss.fff}", audit.Time.Value.ToLocalTime());
}
string message = "";
if (audit.Message != null)
{
message = Utils.Format("{0}", audit.Message.Value);
}
string inputArguments = "";
if (audit.InputArguments != null)
{
inputArguments = Utils.Format("{0}", new Variant(audit.InputArguments.Value));
}
InformationDisplay(
$"sourceName: {sourceName}, type:{type}, method:{method}, status:{status}, time:{time}, message:{message}, inputArguments:{inputArguments}");
}
}
catch (Exception ex)
{
InformationDisplay($"Monitored Item Notification exception: {ex.StackTrace}");
}
}
