public ServiceResult OnEnableDisableAlarm(
ISystemContext context,
ConditionState condition,
bool enabling)
{
StatusCode status = StatusCodes.Good;
ConditionState alarm = GetAlarm();
if (enabling != alarm.EnabledState.Id.Value)
{
alarm.SetEnableState(SystemContext, enabling);
alarm.Message.Value = enabling ? "Enabling" : "Disabling" + " alarm " + MapName;
// if disabled, it will not fire
ReportEvent();
}
else
{
if (enabling)
{
status = StatusCodes.BadConditionAlreadyEnabled;
}
else
{
status = StatusCodes.BadConditionAlreadyDisabled;
}
}
return(status);
}
private void UpdateAlarm(ConditionState node, SimAlarmStateBackend alarm, string eventId = null)
{
ISystemContext context = _nodeManager.SystemContext;
// remove old event.
if (node.EventId.Value != null)
{
_events.Remove(Utils.ToHexString(node.EventId.Value));
}
node.EventId.Value = eventId != null?Encoding.UTF8.GetBytes(eventId) : Guid.NewGuid().ToByteArray();
node.Time.Value = DateTime.UtcNow;
node.ReceiveTime.Value = node.Time.Value;
// save the event for later lookup.
_events[Utils.ToHexString(node.EventId.Value)] = node;
// determine the retain state.
node.Retain.Value = true;
if (alarm != null)
{
node.Time.Value = alarm.Time;
node.Message.Value = new LocalizedText(alarm.Reason);
node.SetComment(context, alarm.Comment, alarm.UserName);
node.SetSeverity(context, alarm.Severity);
node.EnabledState.TransitionTime.Value = alarm.EnableTime;
node.SetEnableState(context, (alarm.State & SimConditionStatesEnum.Enabled) != 0);
if (node is AlarmConditionState)
{
AlarmConditionState nodeAlarm = (AlarmConditionState)node;
nodeAlarm.SetAcknowledgedState(context, (alarm.State & SimConditionStatesEnum.Acknowledged) != 0);
nodeAlarm.SetConfirmedState(context, (alarm.State & SimConditionStatesEnum.Confirmed) != 0);
nodeAlarm.SetActiveState(context, (alarm.State & SimConditionStatesEnum.Active) != 0);
nodeAlarm.SetSuppressedState(context, (alarm.State & SimConditionStatesEnum.Suppressed) != 0);
nodeAlarm.ActiveState.TransitionTime.Value = alarm.ActiveTime;
// not interested in inactive alarms
if (!nodeAlarm.ActiveState.Id.Value)
{
nodeAlarm.Retain.Value = false;
}
}
}
// check for deleted items.
if ((alarm.State & SimConditionStatesEnum.Deleted) != 0)
{
node.Retain.Value = false;
}
// not interested in disabled alarms.
if (!node.EnabledState.Id.Value)
{
node.Retain.Value = false;
}
}
protected new void Initialize(
uint alarmTypeIdentifier,
string name)
{
if (m_alarm == null)
{
// this is invalid
m_alarm = new ConditionState(m_parent);
}
ConditionState alarm = GetAlarm();
// Call the base class to set parameters
base.Initialize(alarmTypeIdentifier, name);
// Set all ConditionType Parameters
alarm.ClientUserId.Value = "Anonymous";
alarm.ConditionClassId.Value = m_alarmConditionType.Node;
alarm.ConditionClassName.Value = new LocalizedText("", m_alarmConditionType.ConditionName);
alarm.ConditionName.Value = m_alarmRootName;
Utils.LogTrace("Alarm ConditionName = {0}", alarm.ConditionName.Value);
alarm.BranchId.Value = new NodeId();
alarm.Retain.Value = false;
alarm.SetEnableState(SystemContext, true);
alarm.Quality.Value = Opc.Ua.StatusCodes.Good;
alarm.LastSeverity.Value = AlarmDefines.INACTIVE_SEVERITY;
alarm.Severity.Value = AlarmDefines.INACTIVE_SEVERITY;
alarm.Comment.Value = new LocalizedText("en", "");
// Set Method Handlers
alarm.OnEnableDisable = OnEnableDisableAlarm;
alarm.OnAddComment = OnAddComment;
alarm.ConditionSubClassId = null;
alarm.ConditionSubClassName = null;
}