private StatusCode DispatchControllerMethod(
RequestContext context,
MethodHandle methodHandle,
IList <Variant> inputArguments,
List <StatusCode> inputArgumentResults,
List <Variant> outputArguments)
{
SystemFunction data = methodHandle.MethodData as SystemFunction;
if (data != null)
{
this.currentData = "CALL " + data.Function + inputArguments[0].ToString();
GenericEvent e = new GenericEvent(Server.FilterManager);
e.Initialize(
null,
ObjectTypeIds.SystemEventType,
ParsedNodeId.Construct(0, "Jemima", DefaultNamespaceIndex),
"Jemima",
EventSeverity.Medium,
"A Jemima is CALL."
);
//e.Set(e.ToPath(new QualifiedName("Jackey", DefaultNamespaceIndex)), currentData);
ReportEvent(e.SourceNode, e);
return(StatusCodes.Good);
}
return(StatusCodes.BadNotImplemented);
}
private BaseObjectState CreateFolderNode(string path)
{
DirectoryInfo info = new DirectoryInfo(path);
if (!info.Exists)
{
return(null);
}
ParsedNodeId nodeId = new ParsedNodeId();
nodeId.RootType = 0;
nodeId.RootId = path;
nodeId.NamespaceIndex = NamespaceIndex;
FolderState node = new FolderState(null);
node.NodeId = nodeId.Construct();
node.BrowseName = new QualifiedName(info.Name, NamespaceIndex);
node.DisplayName = node.BrowseName.Name;
node.TypeDefinitionId = ObjectTypeIds.FolderType;
node.OnPopulateBrowser = OnPopulateBrowser;
return(node);
}
/// <summary>
/// Returns a unique handle for the node.
/// </summary>
protected override NodeHandle GetManagerHandle(ServerSystemContext context, NodeId nodeId, IDictionary <NodeId, NodeState> cache)
{
lock (Lock)
{
// quickly exclude nodes that are not in the namespace.
if (!IsNodeIdInNamespace(nodeId))
{
return(null);
}
// check for check for nodes that are being currently monitored.
MonitoredNode monitoredNode = null;
if (MonitoredNodes.TryGetValue(nodeId, out monitoredNode))
{
NodeHandle handle = new NodeHandle();
handle.NodeId = nodeId;
handle.Validated = true;
handle.Node = monitoredNode.Node;
return(handle);
}
if (nodeId.IdType != IdType.String)
{
NodeState node = null;
if (PredefinedNodes.TryGetValue(nodeId, out node))
{
NodeHandle handle = new NodeHandle();
handle.NodeId = nodeId;
handle.Node = node;
handle.Validated = true;
return(handle);
}
}
// parse the identifier.
ParsedNodeId parsedNodeId = ParsedNodeId.Parse(nodeId);
if (parsedNodeId != null)
{
NodeHandle handle = new NodeHandle();
handle.NodeId = nodeId;
handle.Validated = false;
handle.Node = null;
handle.ParsedNodeId = parsedNodeId;
return(handle);
}
return(null);
}
}
/// <summary>
/// Constructs a node identifier for a segment.
/// </summary>
/// <param name="segmentPath">The segment path.</param>
/// <param name="namespaceIndex">Index of the namespace that qualifies the identifier.</param>
/// <returns>The new node identifier.</returns>
public static NodeId ConstructIdForSegment(string segmentPath, ushort namespaceIndex)
{
var parsedNodeId = new ParsedNodeId {
RootId = segmentPath,
NamespaceIndex = namespaceIndex,
RootType = 0
};
return(parsedNodeId.Construct());
}
/// <summary>
/// Constructs a NodeId for a block.
/// </summary>
/// <param name="blockId">The block id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns>The new NodeId.</returns>
public static NodeId ConstructIdForBlock(string blockId, ushort namespaceIndex)
{
var parsedNodeId = new ParsedNodeId {
RootId = blockId,
NamespaceIndex = namespaceIndex,
RootType = 1
};
return(parsedNodeId.Construct());
}
/// <summary>
/// Constructs a node identifier for a folder object.
/// </summary>
public static NodeId ConstructId(string filePath, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = filePath;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = NodeTypes.Folder;
return(parsedNodeId.Construct());
}
/// <summary>
/// Constructs a node identifier for a item object.
/// </summary>
public static NodeId ConstructId(string filePath, ushort namespaceIndex)
{
var parsedNodeId = new ParsedNodeId {
RootId = filePath,
NamespaceIndex = namespaceIndex,
RootType = NodeTypes.Item
};
return(parsedNodeId.Construct());
}
/// <summary>
/// Constructs a node identifier for a area.
/// </summary>
/// <param name="areaPath">The area path.</param>
/// <param name="namespaceIndex">Index of the namespace that qualifies the identifier.</param>
/// <returns>The new node identifier.</returns>
public static NodeId ConstructIdForArea(string areaPath, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = areaPath;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = 0;
return(parsedNodeId.Construct());
}
/// <summary>
/// Constructs a NodeId for a source.
/// </summary>
/// <param name="sourceId">The source id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns>The new NodeId.</returns>
public static NodeId ConstructIdForSource(string sourceId, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = sourceId;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = 1;
return(parsedNodeId.Construct());
}
/// <summary>
/// Constructs a NodeId from the BrowseName of an internal node.
/// </summary>
/// <param name="browseName">The browse name.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns>The node id.</returns>
public static NodeId ConstructIdForInternalNode(QualifiedName browseName, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = browseName.Name;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = InternalNode;
return parsedNodeId.Construct();
}
/// <summary>
/// Returns a unique handle for the node.
/// </summary>
protected override NodeHandle GetManagerHandle(ServerSystemContext context, NodeId nodeId, IDictionary <NodeId, NodeState> cache)
{
lock (Lock)
{
// quickly exclude nodes that are not in the namespace.
if (!IsNodeIdInNamespace(nodeId))
{
return(null);
}
NodeState node = null;
// check cache (the cache is used because the same node id can appear many times in a single request).
if (cache != null)
{
if (cache.TryGetValue(nodeId, out node))
{
return(new NodeHandle(nodeId, node));
}
}
// look up predefined node.
if (PredefinedNodes.TryGetValue(nodeId, out node))
{
NodeHandle handle = new NodeHandle(nodeId, node);
if (cache != null)
{
cache.Add(nodeId, node);
}
return(handle);
}
#region Task #A5 - Add Support for External Nodes
// parse the node id and return an unvalidated handle.
if (nodeId.IdType == IdType.String)
{
NodeHandle handle = new NodeHandle();
handle.NodeId = nodeId;
handle.Validated = false;
handle.ParsedNodeId = ParsedNodeId.Parse(nodeId);
return(handle);
}
#endregion
// node not found.
return(null);
}
}
/// <summary>
/// Creates the NodeId for the specified node.
/// </summary>
public override NodeId New(ISystemContext context, NodeState node)
{
if (node is BaseInstanceState instance && instance.Parent != null)
{
var pnd = ParsedNodeId.Parse(instance.Parent.NodeId);
if (pnd != null)
{
return(pnd.Construct(instance.SymbolicName));
}
}
return(node.NodeId);
}
/// <summary>
/// Creates the NodeId for the specified node.
/// </summary>
public override NodeId New(ISystemContext context, NodeState node)
{
BaseInstanceState instance = node as BaseInstanceState;
if (instance != null && instance.Parent != null)
{
if (instance.Parent.NodeId.IdType == IdType.String)
{
return(ParsedNodeId.CreateIdForComponent(instance, instance.Parent.NodeId.NamespaceIndex));
}
}
return(node.NodeId);
}
/// <summary>
/// Verifies that the specified node exists.
/// </summary>
protected override NodeState ValidateNode(
ServerSystemContext context,
NodeHandle handle,
IDictionary <NodeId, NodeState> cache)
{
// not valid if no root.
if (handle == null)
{
return(null);
}
// check if previously validated.
if (handle.Validated)
{
return(handle.Node);
}
// lookup in operation cache.
NodeState target = FindNodeInCache(context, handle, cache);
if (target != null)
{
handle.Node = target;
handle.Validated = true;
return(handle.Node);
}
#region Task #A5 - Add Support for External Nodes
ParsedNodeId nodeId = (ParsedNodeId)handle.ParsedNodeId;
BaseObjectState node = CreateFolderNode(nodeId.RootId);
if (node == null)
{
return(null);
}
target = node;
#endregion
// put root into operation cache.
if (cache != null)
{
cache[handle.NodeId] = target;
}
handle.Node = target;
handle.Validated = true;
return(handle.Node);
}
/// <summary>
/// Constructs a NodeId from the ItemId for a DA branch.
/// </summary>
/// <param name="itemId">The item id.</param>
/// <param name="propertyId">The property id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns>The node id.</returns>
public static NodeId ConstructIdForDaElement(string itemId, int propertyId, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = itemId;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = DaElement;
if (propertyId >= 0)
{
parsedNodeId.PropertyId = propertyId;
parsedNodeId.RootType = DaProperty;
}
return parsedNodeId.Construct();
}
/// <summary>
/// Returns a item object for the specified node.
/// </summary>
public ArchiveItemState GetItemState(ISystemContext context, ParsedNodeId parsedNodeId)
{
if (parsedNodeId.RootType != NodeTypes.Item)
{
return(null);
}
var path = new StringBuilder();
path.Append(_configuration.ArchiveRoot);
path.Append('/');
path.Append(parsedNodeId.RootId);
var item = new ArchiveItem(parsedNodeId.RootId, new FileInfo(path.ToString()));
return(new ArchiveItemState(context, item, _namespaceIndex));
}
/// <summary>
/// Does any initialization required before the address space can be used.
/// </summary>
/// <remarks>
/// The externalReferences is an out parameter that allows the node manager to link to nodes
/// in other node managers. For example, the 'Objects' node is managed by the CoreNodeManager and
/// should have a reference to the root folder node(s) exposed by this node manager.
/// </remarks>
public override void CreateAddressSpace(IDictionary <NodeId, IList <IReference> > externalReferences)
{
lock (Lock)
{
base.CreateAddressSpace(externalReferences);
NodeState root = FindPredefinedNode(new NodeId(Quickstarts.Views.Objects.Plant, NamespaceIndex), typeof(NodeState));
Quickstarts.Views.BoilerState boiler1 = new Quickstarts.Views.BoilerState(null);
ParsedNodeId pnd1 = new ParsedNodeId()
{
NamespaceIndex = NamespaceIndex, RootId = "Boiler #1"
};
boiler1.Create(
SystemContext,
pnd1.Construct(),
new QualifiedName("Boiler #1", NamespaceIndex),
null,
true);
boiler1.AddReference(Opc.Ua.ReferenceTypeIds.Organizes, true, root.NodeId);
root.AddReference(Opc.Ua.ReferenceTypeIds.Organizes, false, boiler1.NodeId);
AddPredefinedNode(SystemContext, boiler1);
Quickstarts.Views.BoilerState boiler2 = new Quickstarts.Views.BoilerState(null);
ParsedNodeId pnd2 = new ParsedNodeId()
{
NamespaceIndex = NamespaceIndex, RootId = "Boiler #2"
};
boiler2.Create(
SystemContext,
pnd2.Construct(),
new QualifiedName("Boiler #2", NamespaceIndex),
null,
true);
boiler2.AddReference(Opc.Ua.ReferenceTypeIds.Organizes, true, root.NodeId);
root.AddReference(Opc.Ua.ReferenceTypeIds.Organizes, false, boiler2.NodeId);
AddPredefinedNode(SystemContext, boiler2);
}
}
/// <summary>
/// Returns a unique handle for the node.
/// </summary>
protected override NodeHandle GetManagerHandle(ServerSystemContext context, NodeId nodeId, IDictionary <NodeId, NodeState> cache)
{
lock (Lock) {
// quickly exclude nodes that are not in the namespace.
if (!IsNodeIdInNamespace(nodeId))
{
return(null);
}
// check for check for nodes that are being currently monitored.
if (MonitoredNodes.TryGetValue(nodeId, out var monitoredNode))
{
var handle = new NodeHandle {
NodeId = nodeId,
Validated = true,
Node = monitoredNode.Node
};
return(handle);
}
// parse the identifier.
var parsedNodeId = ParsedNodeId.Parse(nodeId);
if (parsedNodeId != null)
{
var handle = new NodeHandle {
NodeId = nodeId,
Validated = false,
Node = null,
ParsedNodeId = parsedNodeId
};
return(handle);
}
return(null);
}
}
/// <summary>
/// Used to receive notifications when a node is browsed.
/// </summary>
public void OnPopulateBrowser(
ISystemContext context,
NodeState node,
NodeBrowser browser)
{
ParsedNodeId nodeId = ParsedNodeId.Parse(node.NodeId);
DirectoryInfo info = new DirectoryInfo(nodeId.RootId);
if (!info.Exists)
{
return;
}
if (browser.IsRequired(ReferenceTypeIds.Organizes, false))
{
foreach (DirectoryInfo child in info.GetDirectories())
{
ParsedNodeId childId = new ParsedNodeId();
childId.RootType = 0;
childId.RootId = child.FullName;
childId.NamespaceIndex = NamespaceIndex;
browser.Add(new NodeStateReference(ReferenceTypeIds.Organizes, false, childId.Construct()));
}
}
if (browser.IsRequired(ReferenceTypeIds.Organizes, true))
{
ParsedNodeId parentId = new ParsedNodeId();
parentId.RootType = 0;
parentId.RootId = info.Parent.FullName;
parentId.NamespaceIndex = NamespaceIndex;
browser.Add(new NodeStateReference(ReferenceTypeIds.Organizes, true, parentId.Construct()));
}
}
public GodNodManager(ServerManager server, params string[] namespaceUris) : base(server, namespaceUris)
{
InstanceNamespaceIndex = AddNamespaceUri("http://namespaceuri/");
TypeNamespaceIndex = AddNamespaceUri("http://namespaceuri/");
// Load();
NodeId alarmId = ParsedNodeId.Construct(1, "Jemima", DefaultNamespaceIndex, "Jemima Alarm");
alarm.NodeId = alarmId;
alarm.EventType = ObjectTypeIds.ExclusiveLimitAlarmType;
alarm.SourceNode = new NodeId("Root", DefaultNamespaceIndex);
alarm.SourceName = "Jemima";
alarm.Message = "Jemima say's Hello World.";
alarm.Severity = (ushort)EventSeverity.Low;
alarm.ConditionName = "Jemima";
alarm.ConditionClassId = ObjectTypeIds.ProcessConditionClassType;
alarm.ConditionClassName = BrowseNames.ProcessConditionClassType;
alarm.Retain = false;
alarm.EnabledState.Value = ConditionStateNames.Enabled;
alarm.EnabledState.Id = true;
alarm.AckedState.Value = ConditionStateNames.Acknowledged;
alarm.AckedState.Id = true;
alarm.ConfirmedState = new TwoStateVariableModel();
alarm.ConfirmedState.Value = ConditionStateNames.Confirmed;
alarm.ConfirmedState.Id = true;
alarm.ActiveState.Value = ConditionStateNames.Inactive;
alarm.ActiveState.Id = false;
alarm.SuppressedOrShelved = false;
alarm.HighLimit = 35;
alarm.LowLimit = 15;
alarm.InputNode = new NodeId("Jackey", DefaultNamespaceIndex);
alarm.UserData = new SystemAddress()
{
Address = 10, Offset = 1000
};
}
/// <summary>
/// Constructs the node id for a branch.
/// </summary>
/// <param name="itemId">The item id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public static NodeId ConstructIdForHdaBranch(string itemId, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = itemId;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = HdaBranch;
return parsedNodeId.Construct();
}
/// <summary>
/// Does any initialization required before the address space can be used.
/// </summary>
/// <remarks>
/// The externalReferences is an out parameter that allows the node manager to link to nodes
/// in other node managers. For example, the 'Objects' node is managed by the CoreNodeManager and
/// should have a reference to the root folder node(s) exposed by this node manager.
/// </remarks>
public override void CreateAddressSpace(IDictionary <NodeId, IList <IReference> > externalReferences)
{
lock (Lock)
{
dynamicNodes_ = new List <BaseDataVariableState>();
if (!externalReferences.TryGetValue(ObjectIds.ObjectsFolder, out var references))
{
externalReferences[ObjectIds.ObjectsFolder] = References = new List <IReference>();
}
else
{
References = references;
}
LoadPredefinedNodes(SystemContext, externalReferences);
// Create the root folder for all nodes of this server
var root = CreateFolderState(null, "My Data", new LocalizedText("en", "My Data"),
new LocalizedText("en", "Root folder of the Sample Server. All nodes must be placed under this root."));
References.Add(new NodeStateReference(ReferenceTypes.Organizes, false, root.NodeId));
root.EventNotifier = EventNotifiers.SubscribeToEvents;
opcServer_.AddRootNotifier(root);
try
{
#region Static
var staticFolder = CreateFolderState(root, "Static", "Static", "A folder with a sample static variable.");
const string scalarStatic = "Static_";
CreateBaseDataVariableState(staticFolder, scalarStatic + "String", "String", null, DataTypeIds.String, ValueRanks.Scalar, AccessLevels.CurrentReadOrWrite, null);
#endregion
#region Simulation
var simulationFolder = CreateFolderState(root, "Simulation", "Simulation", "A folder with simulated variables.");
const string simulation = "Simulation_";
var simulatedVariable = CreateDynamicVariable(simulationFolder, simulation + "Double", "Double", "A simulated variable of type Double. If Enabled is true this value changes based on the defined Interval.", DataTypeIds.Double, ValueRanks.Scalar, AccessLevels.CurrentReadOrWrite, null);
var intervalVariable = CreateBaseDataVariableState(simulationFolder, simulation + "Interval", "Interval", "The Interval used for changing the simulated values.", DataTypeIds.UInt16, ValueRanks.Scalar, AccessLevels.CurrentReadOrWrite, simulationInterval_);
intervalVariable.OnSimpleWriteValue = OnWriteInterval;
var enabledVariable = CreateBaseDataVariableState(simulationFolder, simulation + "Enabled", "Enabled", "Specifies whether the simulation is enabled (true) or disabled (false).", DataTypeIds.Boolean, ValueRanks.Scalar, AccessLevels.CurrentReadOrWrite, simulationEnabled_);
enabledVariable.OnSimpleWriteValue = OnWriteEnabled;
#endregion
#region Plant
var plantFolder = CreateFolderState(root, "Plant", "Plant", null);
// Create an instance for machine 1
var parsedNodeId = new ParsedNodeId()
{
NamespaceIndex = NamespaceIndex, RootId = "Machine #1"
};
machine1_.Create(
SystemContext,
parsedNodeId.Construct(),
new QualifiedName("Machine #1", NamespaceIndex),
null,
true);
// Initialize the property value of MachineData
machine1_.MachineData.Value = new MachineDataType
{
MachineName = "Machine #1",
Manufacturer = "SampleCompany",
SerialNumber = "SN 1079",
MachineState = MachineStateDataType.Inactive
};
machine1_.AddReference(ReferenceTypeIds.Organizes, true, plantFolder.NodeId);
plantFolder.AddReference(ReferenceTypeIds.Organizes, false, machine1_.NodeId);
AddPredefinedNode(SystemContext, machine1_);
// Create an instance for machine 2
parsedNodeId = new ParsedNodeId()
{
NamespaceIndex = NamespaceIndex, RootId = "Machine #2"
};
machine2_.Create(
SystemContext,
parsedNodeId.Construct(),
new QualifiedName("Machine #2", NamespaceIndex),
null,
true);
// Initialize the property value of MachineData
machine2_.MachineData.Value = new MachineDataType
{
MachineName = "Machine #2",
Manufacturer = "Unknown",
SerialNumber = "SN 1312",
MachineState = MachineStateDataType.PrepareRemove
};
machine2_.AddReference(ReferenceTypeIds.Organizes, true, plantFolder.NodeId);
plantFolder.AddReference(ReferenceTypeIds.Organizes, false, machine2_.NodeId);
AddPredefinedNode(SystemContext, machine2_);
// Create an instance of GetMachineDataMethodState
parsedNodeId = new ParsedNodeId()
{
NamespaceIndex = NamespaceIndex, RootId = "GetMachineData"
};
Model.GetMachineDataMethodState getMachineDataMethod = new Model.GetMachineDataMethodState(null);
getMachineDataMethod.Create(
SystemContext,
parsedNodeId.Construct(),
new QualifiedName("GetMachineData", NamespaceIndex),
null,
true);
getMachineDataMethod.AddReference(ReferenceTypeIds.Organizes, true, plantFolder.NodeId);
plantFolder.AddReference(ReferenceTypeIds.Organizes, false, getMachineDataMethod.NodeId);
plantFolder.AddChild(getMachineDataMethod);
// Add the event handler if the method is called
getMachineDataMethod.OnCall = OnGetMachineData;
AddPredefinedNode(SystemContext, getMachineDataMethod);
#endregion
}
catch (Exception e)
{
Utils.Trace(e, "Error creating the address space.");
}
// Add all nodes under root to the server
AddPredefinedNode(SystemContext, root);
simulationTimer_ = new Timer(DoSimulation, null, 1000, 1000);
}
}
/// <summary>
/// Constructs the id for a source.
/// </summary>
/// <param name="areaId">The area id.</param>
/// <param name="sourceName">Name of the source.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns></returns>
public static NodeId ConstructIdForSource(string areaId, string sourceName, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootType = AeSource;
parsedNodeId.RootId = areaId;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.ComponentPath = sourceName;
return parsedNodeId.Construct();
}
/// <summary>
/// Constructs the id for an area.
/// </summary>
/// <param name="areaId">The area id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns></returns>
public static NodeId ConstructIdForArea(string areaId, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = areaId;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = AeArea;
return parsedNodeId.Construct();
}
public override void Startup()
{
try
{
Console.WriteLine("Starting Lesson3bNodeManager.");
base.Startup();
// save the namespaces used by this node manager.
AddNamespaceUri("http://yourcompany.com/lesson03b/");
// initialize the underlying system.
// create root folder.
NodeId rootId = ParsedNodeId.Construct(0, "Root", DefaultNamespaceIndex);
CreateObjectSettings settings = new CreateObjectSettings()
{
ParentNodeId = ObjectIds.ObjectsFolder,
ReferenceTypeId = ReferenceTypeIds.Organizes,
RequestedNodeId = rootId,
BrowseName = new QualifiedName("Root", DefaultNamespaceIndex),
TypeDefinitionId = ObjectTypeIds.FolderType,
NotifierParent = ObjectIds.Server,
};
CreateObject(Server.DefaultRequestContext, settings);
// add controllers.
NodeId controllerId = ParsedNodeId.Construct(0, "Jemima", DefaultNamespaceIndex);
// create object.
settings = new CreateObjectSettings()
{
ParentNodeId = rootId,
ReferenceTypeId = ReferenceTypeIds.Organizes,
RequestedNodeId = controllerId,
BrowseName = new QualifiedName("Jemima", DefaultNamespaceIndex),
TypeDefinitionId = ObjectTypeIds.BaseObjectType,
NotifierParent = new NodeId("Root", DefaultNamespaceIndex),
};
CreateObject(Server.DefaultRequestContext, settings);
NodeId variableId = ParsedNodeId.Construct(0, "Jemima", DefaultNamespaceIndex, "Jackey");
// configure the variable so the SDK will automatically poll the system when it is subscribed.
// this node manager needs to implement the read/write requests.
CreateVariableSettings settings2 = new CreateVariableSettings()
{
ParentNodeId = controllerId,
ReferenceTypeId = ReferenceTypeIds.HasComponent,
RequestedNodeId = variableId,
BrowseName = new QualifiedName("Jackey", DefaultNamespaceIndex),
TypeDefinitionId = (true) ? VariableTypeIds.AnalogItemType : VariableTypeIds.DataItemType,
DataType = NodeId.Parse("i=12"),
ValueRank = ValueRanks.Scalar,
AccessLevel = AccessLevels.CurrentReadOrWrite,
ValueType = NodeHandleType.ExternalPolled,
ValueData = new SystemAddress()
{
Address = 10, Offset = 100
},
// Value = "Hello World.",
};
CreateVariable(Server.DefaultRequestContext, settings2);
NodeId methodId = ParsedNodeId.Construct(0, "Jemima", DefaultNamespaceIndex, "WriteValue");
var settings3 = new CreateMethodSettings()
{
ParentNodeId = controllerId,
ReferenceTypeId = ReferenceTypeIds.HasComponent,
RequestedNodeId = methodId,
BrowseName = new QualifiedName("WriteValue", DefaultNamespaceIndex),
NodeData = new SystemFunction()
{
Address = "Address", Function = "WriteValue"
},
InputArguments = new[]
{
new Argument()
{
Name = "Value_String", DataType = DataTypeIds.String, ValueRank = ValueRanks.Any
},
}
};
CreateMethod(Server.DefaultRequestContext, settings3);
}
catch (Exception e)
{
Console.WriteLine("Failed to start Lesson3bNodeManager. " + e.Message);
}
}
/// <summary>
/// Called when the node manager is started.
/// </summary>
public override void Startup()
{
try
{
Console.WriteLine("Starting Lesson3bNodeManager.");
base.Startup();
// save the namespaces used by this node manager.
AddNamespaceUri("http://yourcompany.com/lesson03b/");
// initialize the underlying system.
m_system.Initialize();
// create root folder.
NodeId rootId = ParsedNodeId.Construct(0, "3b", DefaultNamespaceIndex);
CreateObjectSettings settings = new CreateObjectSettings()
{
ParentNodeId = ObjectIds.ObjectsFolder,
ReferenceTypeId = ReferenceTypeIds.Organizes,
RequestedNodeId = rootId,
BrowseName = new QualifiedName("3b", DefaultNamespaceIndex),
TypeDefinitionId = ObjectTypeIds.FolderType
};
CreateObject(Server.DefaultRequestContext, settings);
// add controllers.
foreach (BlockConfiguration block in m_system.GetBlocks())
{
NodeId controllerId = ParsedNodeId.Construct(0, block.Name, DefaultNamespaceIndex);
// create object.
settings = new CreateObjectSettings()
{
ParentNodeId = rootId,
ReferenceTypeId = ReferenceTypeIds.Organizes,
RequestedNodeId = controllerId,
BrowseName = new QualifiedName(block.Name, DefaultNamespaceIndex),
TypeDefinitionId = ObjectTypeIds.BaseObjectType
};
CreateObject(Server.DefaultRequestContext, settings);
foreach (BlockProperty property in block.Properties)
{
NodeId variableId = ParsedNodeId.Construct(0, block.Name, DefaultNamespaceIndex, property.Name);
// configure the variable so the SDK will automatically poll the system when it is subscribed.
// this node manager needs to implement the read/write requests.
CreateVariableSettings settings2 = new CreateVariableSettings()
{
ParentNodeId = controllerId,
ReferenceTypeId = ReferenceTypeIds.HasComponent,
RequestedNodeId = variableId,
BrowseName = new QualifiedName(property.Name, DefaultNamespaceIndex),
TypeDefinitionId = (property.Range != null) ? VariableTypeIds.AnalogItemType : VariableTypeIds.DataItemType,
DataType = property.DataType,
ValueRank = ValueRanks.Scalar,
AccessLevel = (property.Writeable) ? AccessLevels.CurrentReadOrWrite : AccessLevels.CurrentRead,
ValueType = NodeHandleType.ExternalPolled,
ValueData = new SystemAddress()
{
Address = block.Address, Offset = property.Offset
}
};
CreateVariable(Server.DefaultRequestContext, settings2);
// check if an EURange property needs to be created.
// the value is stored internally by the SDK so no additional work to support read is required.
//if (property.Range != null)
//{
// NodeId propertyId = ParsedNodeId.Construct(0, block.Name, DefaultNamespaceIndex, property.Name, BrowseNames.EURange);
// settings2 = new CreateVariableSettings()
// {
// ParentNodeId = variableId,
// ReferenceTypeId = ReferenceTypeIds.HasProperty,
// RequestedNodeId = propertyId,
// BrowseName = new QualifiedName(BrowseNames.EURange),
// TypeDefinitionId = VariableTypeIds.PropertyType,
// DataType = DataTypeIds.Range,
// ValueRank = ValueRanks.Scalar,
// AccessLevel = AccessLevels.CurrentRead,
// Value = new Variant(property.Range)
// };
// CreateVariable(Server.DefaultRequestContext, settings2);
//}
}
}
}
catch (Exception e)
{
Console.WriteLine("Failed to start Lesson3bNodeManager. " + e.Message);
}
}
/// <summary>
/// Parses the specified node identifier.
/// </summary>
/// <param name="nodeId">The node identifier.</param>
/// <returns>The parsed node identifier. Null if the identifier cannot be parsed.</returns>
public static new ParsedNodeId Parse(NodeId nodeId)
{
// can only parse non-null string node identifiers.
if (NodeId.IsNull(nodeId))
{
return null;
}
string identifier = nodeId.Identifier as string;
if (String.IsNullOrEmpty(identifier))
{
return null;
}
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.NamespaceIndex = nodeId.NamespaceIndex;
// extract the type of identifier.
parsedNodeId.RootType = 0;
int start = 0;
for (int ii = 0; ii < identifier.Length; ii++)
{
if (!Char.IsDigit(identifier[ii]))
{
start = ii;
break;
}
parsedNodeId.RootType *= 10;
parsedNodeId.RootType += (byte)(identifier[ii] - '0');
}
if (start >= identifier.Length || identifier[start] != ':')
{
return null;
}
// extract any component path.
StringBuilder buffer = new StringBuilder();
int index = start+1;
int end = identifier.Length;
bool escaped = false;
while (index < end)
{
char ch = identifier[index++];
// skip any escape character but keep the one after it.
if (ch == '&')
{
escaped = true;
continue;
}
if (!escaped && ch == '?')
{
end = index;
break;
}
buffer.Append(ch);
escaped = false;
}
// extract any component.
parsedNodeId.RootId = buffer.ToString();
parsedNodeId.ComponentPath = null;
if (parsedNodeId.RootType == ModelUtils.DaProperty)
{
// must have the property id.
if (end >= identifier.Length)
{
return null;
}
// extract the property id.
for (int ii = end; ii < identifier.Length; ii++)
{
end++;
if (!Char.IsDigit(identifier[ii]))
{
// check for terminator.
if (identifier[ii] != ':')
{
return null;
}
break;
}
parsedNodeId.PropertyId *= 10;
parsedNodeId.PropertyId += (byte)(identifier[ii] - '0');
}
}
// extract the component path.
if (end < identifier.Length)
{
parsedNodeId.ComponentPath = identifier.Substring(end);
}
return parsedNodeId;
}
/// <summary>
/// Constructs the node id for an item attribute.
/// </summary>
/// <param name="itemId">The item id.</param>
/// <param name="attributeId">The attribute id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns></returns>
public static NodeId ConstructIdForHdaItemAttribute(string itemId, uint attributeId, ushort namespaceIndex)
{
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = itemId;
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = HdaItemAttribute;
parsedNodeId.ComponentPath = attributeId.ToString();
return parsedNodeId.Construct();
}
/// <summary>
/// Constructs the node id for an aggregate function.
/// </summary>
/// <param name="aggregateId">The aggregate id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
/// <returns></returns>
public static NodeId ConstructIdForHdaAggregate(uint aggregateId, ushort namespaceIndex)
{
// check for built in aggregates.
NodeId nodeId = ComUtils.GetHdaAggregateId(aggregateId);
if (nodeId != null)
{
return nodeId;
}
// server specific aggregates.
ParsedNodeId parsedNodeId = new ParsedNodeId();
parsedNodeId.RootId = aggregateId.ToString();
parsedNodeId.NamespaceIndex = namespaceIndex;
parsedNodeId.RootType = HdaAggregate;
return parsedNodeId.Construct();
}
/// <summary>
/// Does any initialization required before the address space can be used.
/// </summary>
/// <remarks>
/// The externalReferences is an out parameter that allows the node manager to link to nodes
/// in other node managers. For example, the 'Objects' node is managed by the CoreNodeManager and
/// should have a reference to the root folder node(s) exposed by this node manager.
/// </remarks>
public override void CreateAddressSpace(IDictionary <NodeId, IList <IReference> > externalReferences)
{
lock (Lock)
{
if (!externalReferences.TryGetValue(ObjectIds.ObjectsFolder, out var references))
{
externalReferences[ObjectIds.ObjectsFolder] = References = new List <IReference>();
}
else
{
References = references;
}
LoadPredefinedNodes(SystemContext, externalReferences);
var root = CreateFolderState(null, "My Data", new LocalizedText("en", "My Data"), new LocalizedText("en", "Root folder of Workshop Server"));
References.Add(new NodeStateReference(ReferenceTypes.Organizes, false, root.NodeId));
root.EventNotifier = EventNotifiers.SubscribeToEvents;
opcServer_.AddRootNotifier(root);
try
{
#region Plant
var plantFolder = CreateFolderState(root, "Plant", "Plant", null);
var machine1 = new Model.MachineState(null);
var pnd1 = new ParsedNodeId()
{
NamespaceIndex = NamespaceIndex, RootId = "Machine #1"
};
machine1.Create(
SystemContext,
pnd1.Construct(),
new QualifiedName("Machine #1", NamespaceIndex),
null,
true);
machine1.AddReference(ReferenceTypeIds.Organizes, true, plantFolder.NodeId);
plantFolder.AddReference(ReferenceTypeIds.Organizes, false, machine1.NodeId);
AddPredefinedNode(SystemContext, machine1);
var machine2 = new Model.MachineState(null);
var pnd2 = new ParsedNodeId()
{
NamespaceIndex = NamespaceIndex, RootId = "Machine #2"
};
machine2.Create(
SystemContext,
pnd2.Construct(),
new QualifiedName("Machine #2", NamespaceIndex),
null,
true);
machine2.AddReference(ReferenceTypeIds.Organizes, true, plantFolder.NodeId);
plantFolder.AddReference(ReferenceTypeIds.Organizes, false, machine2.NodeId);
AddPredefinedNode(SystemContext, machine2);
#endregion
}
catch (Exception e)
{
Utils.Trace(e, "Error creating the address space.");
}
AddPredefinedNode(SystemContext, root);
}
}
