/// <summary>
/// Returns a list of all nodes under the given node, with the given type and name.
/// </summary>
/// <returns>
public List <string> GetAllChildren(string key, Type type, string name)
{
List <string> allChildren = new List <string>();
foreach (var child in ((TopologyNode)TopologyTable[key]).GetChildren())
{
ContosoTopologyNode node = TopologyTable[child] as ContosoTopologyNode;
if (node != null)
{
if (node.GetType() == type && node.Name == name)
{
allChildren.Add(child);
}
if (((TopologyNode)TopologyTable[child]).ChildrenCount > 0)
{
allChildren.AddRange(GetAllChildren(child, type, name));
}
}
}
return(allChildren);
}
/// <summary>
/// Returns information for all children of the given topology node.
/// This information will be shown in the UX.
/// </summary>
/// <param name="parentKey"></param>
public List <ContosoChildInfo> GetChildrenInfo(string parentKey)
{
List <ContosoChildInfo> childrenInfo = new List <ContosoChildInfo>();
// Update type of children for the given key.
ContosoTopologyNode parent = (ContosoTopologyNode)TopologyTable[parentKey];
Type childrenType = null;
Type parentType = parent.GetType();
childrenType = typeof(Factory);
if (parentType == typeof(Factory))
{
childrenType = typeof(ProductionLine);
}
else if (parentType == typeof(ProductionLine))
{
childrenType = typeof(Station);
}
else if (parentType == typeof(Station))
{
childrenType = typeof(ContosoOpcUaNode);
}
// Prepare the list with the child objects for the view.
if (childrenType == typeof(ContosoOpcUaNode))
{
Station station = (Station)TopologyTable[parentKey];
foreach (ContosoOpcUaNode opcUaNode in station.NodeList)
{
ContosoChildInfo childInfo = new ContosoChildInfo(station.Key,
opcUaNode.NodeId,
opcUaNode.Status.ToString(),
opcUaNode.SymbolicName,
opcUaNode.SymbolicName,
station.Location.City,
station.Location.Latitude,
station.Location.Longitude,
opcUaNode.Visible,
opcUaNode.LastValueToUxString(),
opcUaNode.Units,
opcUaNode.ImagePushpin);
childrenInfo.Add(childInfo);
}
}
else
{
var childrenKeys = ((ContosoTopologyNode)TopologyTable[parentKey]).GetChildren();
foreach (string key in childrenKeys)
{
if (childrenType == typeof(Factory))
{
Factory factory = (Factory)TopologyTable[key];
ContosoChildInfo dashboardChild = new ContosoChildInfo(factory.Key, factory.Status.ToString(), factory.Name, factory.Description,
factory.Location.City, factory.Location.Latitude, factory.Location.Longitude, true, factory.ImagePushpin);
childrenInfo.Add(dashboardChild);
}
if (childrenType == typeof(ProductionLine))
{
ProductionLine productionLine = (ProductionLine)TopologyTable[key];
ContosoChildInfo dashboardChild = new ContosoChildInfo(productionLine.Key, productionLine.Status.ToString(), productionLine.Name, productionLine.Description,
productionLine.Location.City, productionLine.Location.Latitude, productionLine.Location.Longitude, true, productionLine.ImagePushpin);
childrenInfo.Add(dashboardChild);
}
if (childrenType == typeof(Station))
{
Station station = (Station)TopologyTable[key];
ContosoChildInfo dashboardChild = new ContosoChildInfo(station.Key, station.Status.ToString(), station.Name, station.Description,
station.Location.City, station.Location.Latitude, station.Location.Longitude, true, station.ImagePushpin);
childrenInfo.Add(dashboardChild);
}
}
}
return(childrenInfo);
}
/// <summary>
/// Gets alert information for the given topology node and all nodes below it.
/// Multiple alerts with the same cause are consolidated and only the time information for the newest alert is returned.
/// This information will be shown in the UX.
/// </summary>
public List <ContosoAlertInfo> GetAlerts(string key)
{
List <ContosoAlert> alertList = GetAllAlerts(key);
List <ContosoAlertInfo> dashboardAlerts = new List <ContosoAlertInfo>();
ContosoAlertCause dummyAlertCause = new ContosoAlertCause();
ContosoAlertInfo dashboardAlert = new ContosoAlertInfo();
if (alertList.Count == 0)
{
return(dashboardAlerts);
}
List <string> allNodeKey = GetAllChildren(key);
// Add key itself as well.
allNodeKey.Add(key);
foreach (var nodeKey in allNodeKey)
{
ContosoTopologyNode topologyNode = TopologyTable[nodeKey] as ContosoTopologyNode;
List <ContosoAlert> childAlerts = topologyNode.Alerts;
if (childAlerts.Count > 0)
{
if (topologyNode.GetType() == typeof(Station))
{
Station station = topologyNode as Station;
// The OPC UA nodes only generate value alerts.
foreach (var opcNode in station.NodeList)
{
foreach (ContosoAlertCause alertCause in Enum.GetValues(dummyAlertCause.GetType()))
{
if (alertCause == ContosoAlertCause.AlertCauseValueBelowMinimum ||
alertCause == ContosoAlertCause.AlertCauseValueAboveMaximum)
{
// Aggregate similar alerts.
List <ContosoAlert> sameCauseAlerts = childAlerts.FindAll(x => (x.Cause == alertCause && x.Key == nodeKey && x.SubKey == opcNode.NodeId && x.Time != DateTime.MinValue));
if (sameCauseAlerts.Count > 0)
{
// Find the newest alert.
long newestTicks = sameCauseAlerts.Max(x => x.Time.Ticks);
ContosoAlert alert = sameCauseAlerts.Find(x => x.Time.Ticks == newestTicks);
// Create alert dashboard info and add it to the dashboard alert list.
dashboardAlert = CreateDashboardAlertInfo(alert, sameCauseAlerts.Count, nodeKey);
dashboardAlerts.Add(dashboardAlert);
}
}
}
}
// For the station node we handle performance alerts.
foreach (ContosoAlertCause alertCause in Enum.GetValues(dummyAlertCause.GetType()))
{
if (alertCause == ContosoAlertCause.AlertCauseValueBelowMinimum ||
alertCause == ContosoAlertCause.AlertCauseValueAboveMaximum)
{
continue;
}
// Aggregate similar alerts.
List <ContosoAlert> sameCauseAlerts = childAlerts.FindAll(x => (x.Cause == alertCause && x.Key == nodeKey && x.Time != DateTime.MinValue));
if (sameCauseAlerts.Count > 0)
{
// Find the newest alert.
long newestTicks = sameCauseAlerts.Max(x => x.Time.Ticks);
ContosoAlert alert = sameCauseAlerts.Find(x => x.Time.Ticks == newestTicks);
// Create alert dashboard info and add it to the dashboard alert list.
dashboardAlert = CreateDashboardAlertInfo(alert, sameCauseAlerts.Count, nodeKey);
dashboardAlerts.Add(dashboardAlert);
}
}
}
else
{
foreach (ContosoAlertCause alertCause in Enum.GetValues(dummyAlertCause.GetType()))
{
// Aggregate similar alerts.
List <ContosoAlert> sameCauseAlerts = childAlerts.FindAll(x => (x.Cause == alertCause && x.Key == nodeKey && x.Time != DateTime.MinValue));
if (sameCauseAlerts.Count > 0)
{
// Find the newest alert.
long newestTicks = sameCauseAlerts.Max(x => x.Time.Ticks);
ContosoAlert alert = sameCauseAlerts.Find(x => x.Time.Ticks == newestTicks);
// Create alert dashboard info and add it to the dashboard alert list.
dashboardAlert = CreateDashboardAlertInfo(alert, sameCauseAlerts.Count, nodeKey);
dashboardAlerts.Add(dashboardAlert);
}
}
}
}
}
dashboardAlerts.Sort(delegate(ContosoAlertInfo x, ContosoAlertInfo y)
{
if (x.Time < y.Time)
{
return(1);
}
if (x.Time == y.Time)
{
return(0);
}
return(-1);
});
return(dashboardAlerts);
}