/// <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);
}
/// <summary>
/// Updates the event types in cache with the most recent info fetched from the AE server.
/// </summary>
public void UpdateCache(ServerSystemContext context, ushort namespaceIndex)
{
// clear the existing nodes.
EventTypeNodes = new NodeIdDictionary <BaseObjectTypeState>();
Attributes = new Dictionary <int, int[]>();
TypeTable typeTable = context.TypeTable as TypeTable;
// rebuild from the recently fetched list.
for (int ii = 0; ii < EventTypes.Count; ii++)
{
// save the attributes for use when creating filters.
if (EventTypes[ii].EventTypeMapping != EventTypeMapping.ConditionClassType && !Attributes.ContainsKey(EventTypes[ii].CategoryId))
{
EventType eventType = EventTypes[ii];
int[] attributeIds = new int[eventType.Attributes.Count];
for (int jj = 0; jj < attributeIds.Length; jj++)
{
attributeIds[jj] = eventType.Attributes[jj].Id;
}
Attributes.Add(EventTypes[ii].CategoryId, attributeIds);
}
AeEventTypeState node = new AeEventTypeState(EventTypes[ii], namespaceIndex);
BaseObjectTypeState mappingNode = null;
if (!EventTypeNodes.TryGetValue(node.SuperTypeId, out mappingNode))
{
mappingNode = new AeEventTypeMappingState(node.EventType.EventTypeMapping, namespaceIndex);
EventTypeNodes.Add(mappingNode.NodeId, mappingNode);
// ensure the mapping node is in the type table.
if (typeTable != null)
{
if (!typeTable.IsKnown(mappingNode.NodeId))
{
typeTable.AddSubtype(mappingNode.NodeId, mappingNode.SuperTypeId);
}
}
}
EventTypeNodes.Add(node.NodeId, node);
// ensure the type node is in the type table.
if (typeTable != null)
{
if (!typeTable.IsKnown(node.NodeId))
{
typeTable.AddSubtype(node.NodeId, mappingNode.NodeId);
}
}
}
}
/// <summary>
/// Updates the event types in cache with the most recent info fetched from the AE server.
/// </summary>
public void UpdateCache(ServerSystemContext context, ushort namespaceIndex)
{
// clear the existing nodes.
EventTypeNodes = new NodeIdDictionary<BaseObjectTypeState>();
Attributes = new Dictionary<int,int[]>();
TypeTable typeTable = context.TypeTable as TypeTable;
// rebuild from the recently fetched list.
for (int ii = 0; ii < EventTypes.Count; ii++)
{
// save the attributes for use when creating filters.
if (EventTypes[ii].EventTypeMapping != EventTypeMapping.ConditionClassType && !Attributes.ContainsKey(EventTypes[ii].CategoryId))
{
EventType eventType = EventTypes[ii];
int[] attributeIds = new int[eventType.Attributes.Count];
for (int jj = 0; jj < attributeIds.Length; jj++)
{
attributeIds[jj] = eventType.Attributes[jj].Id;
}
Attributes.Add(EventTypes[ii].CategoryId, attributeIds);
}
AeEventTypeState node = new AeEventTypeState(EventTypes[ii], namespaceIndex);
BaseObjectTypeState mappingNode = null;
if (!EventTypeNodes.TryGetValue(node.SuperTypeId, out mappingNode))
{
mappingNode = new AeEventTypeMappingState(node.EventType.EventTypeMapping, namespaceIndex);
EventTypeNodes.Add(mappingNode.NodeId, mappingNode);
// ensure the mapping node is in the type table.
if (typeTable != null)
{
if (!typeTable.IsKnown(mappingNode.NodeId))
{
typeTable.AddSubtype(mappingNode.NodeId, mappingNode.SuperTypeId);
}
}
}
EventTypeNodes.Add(node.NodeId, node);
// ensure the type node is in the type table.
if (typeTable != null)
{
if (!typeTable.IsKnown(node.NodeId))
{
typeTable.AddSubtype(node.NodeId, mappingNode.NodeId);
}
}
}
}
/// <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;
}
/// <summary>
/// Updates the condition event.
/// </summary>
private void UpdateAlarm(AlarmConditionState instance, EventType eventType, ONEVENTSTRUCT e)
{
instance.NodeId = AeParsedNodeId.ConstructIdForCondition(e.szSource, e.dwEventCategory, e.szConditionName, m_namespaceIndex);
// find the condition class.
NodeId classId = AeParsedNodeId.Construct(e.dwEventType, e.dwEventCategory, null, m_namespaceIndex);
AeEventTypeState conditionClassType = m_cache.FindType(m_defaultContext, classId);
if (conditionClassType != null)
{
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassId, classId, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassName, conditionClassType.EventType.Description, false);
}
else
{
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassId, Opc.Ua.ObjectTypeIds.BaseConditionClassType, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassName, "BaseConditionClass", false);
}
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionName, e.szConditionName, false);;
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ClientUserId, e.szActorID, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Quality, ComUtils.GetQualityCode(e.wQuality), false);
bool acknowledged = (e.wNewState & Constants.CONDITION_ACKED) != 0;
bool active = (e.wNewState & Constants.CONDITION_ACTIVE) != 0;
bool enabled = (e.wNewState & Constants.CONDITION_ENABLED) != 0;
bool retain = enabled & (active || !acknowledged);
LocalizedText effectiveDisplayName = ConditionStateNames.Inactive;
if (!enabled)
{
effectiveDisplayName = ConditionStateNames.Disabled;
}
else if (!acknowledged)
{
effectiveDisplayName = ConditionStateNames.Unacknowledged;
}
else if (active)
{
effectiveDisplayName = ConditionStateNames.Active;
}
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Retain, true, false);
instance.EnabledState = new TwoStateVariableState(instance);
instance.EnabledState.BrowseName = Opc.Ua.BrowseNames.EnabledState;
instance.EnabledState.Value = new LocalizedText((enabled) ? ConditionStateNames.Enabled : ConditionStateNames.Disabled);
instance.EnabledState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Id, enabled, false);
instance.EnabledState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.EffectiveDisplayName, effectiveDisplayName, false);
instance.AckedState = new TwoStateVariableState(instance);
instance.AckedState.BrowseName = Opc.Ua.BrowseNames.AckedState;
instance.AckedState.Value = new LocalizedText((acknowledged) ? ConditionStateNames.Acknowledged : ConditionStateNames.Unacknowledged);
instance.AckedState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Id, acknowledged, false);
instance.ActiveState = new TwoStateVariableState(instance);
instance.ActiveState.BrowseName = Opc.Ua.BrowseNames.ActiveState;
instance.ActiveState.Value = new LocalizedText((active) ? ConditionStateNames.Active : ConditionStateNames.Inactive);
instance.ActiveState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Id, active, false);
instance.ActiveState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.TransitionTime, ComUtils.GetDateTime(e.ftActiveTime), false);
if (!String.IsNullOrEmpty(e.szSubconditionName))
{
instance.ActiveState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.EffectiveDisplayName, e.szSubconditionName, false);
}
}
/// <summary>
/// Dispatches the event.
/// </summary>
private BaseEventState DispatchEvent(ONEVENTSTRUCT e)
{
NodeId typeId = AeParsedNodeId.Construct(e.dwEventType, e.dwEventCategory, e.szConditionName, m_namespaceIndex);
// find the type.
AeEventTypeState eventType = m_cache.FindType(m_defaultContext, typeId);
if (eventType == null)
{
return(null);
}
// create a new instance.
BaseEventState instance = m_cache.CreateInstance(m_defaultContext, eventType);
if (instance == null)
{
return(null);
}
// fill in fields.
UpdateBaseEvent(instance, eventType.EventType, e);
if (instance is AuditEventState)
{
UpdateAuditEvent((AuditEventState)instance, eventType.EventType, e);
}
if (instance is AlarmConditionState)
{
UpdateAlarm((AlarmConditionState)instance, eventType.EventType, e);
}
if (instance is ExclusiveLimitAlarmState)
{
UpdateExclusiveLimitAlarm((ExclusiveLimitAlarmState)instance, eventType.EventType, e);
}
else if (instance is NonExclusiveLimitAlarmState)
{
UpdateNonExclusiveLimitAlarm((NonExclusiveLimitAlarmState)instance, eventType.EventType, e);
}
// process attributes.
bool ackCommentFound = false;
object[] values = ComUtils.GetVARIANTs(ref e.pEventAttributes, e.dwNumEventAttrs, false);
for (int ii = 0; ii < eventType.EventType.Attributes.Count; ii++)
{
EventAttribute attribute = eventType.EventType.Attributes[ii];
if (ii >= e.dwNumEventAttrs)
{
continue;
}
if (!ackCommentFound && AeTypeCache.IsKnownName(attribute.Description, "ACK COMMENT"))
{
ConditionState condition = instance as ConditionState;
if (condition != null)
{
condition.Comment = new ConditionVariableState <LocalizedText>(condition);
condition.Comment.BrowseName = Opc.Ua.BrowseNames.Comment;
condition.Comment.Value = new LocalizedText(values[ii] as string);
}
ackCommentFound = true;
continue;
}
PropertyState property = new PropertyState(instance);
property.SymbolicName = attribute.Description;
property.BrowseName = new QualifiedName(property.SymbolicName, m_namespaceIndex);
property.Value = values[ii];
instance.AddChild(property);
}
return(instance);
}