/// <summary>
/// Initializes the node manager.
/// </summary>
public FileSystemNodeManager(Opc.Ua.Server.IServerInternal server, string systemRoot)
:
base(server)
{
List <string> namespaceUris = new List <string>();
namespaceUris.Add(Namespaces.FileSystem);
namespaceUris.Add(Namespaces.FileSystem + "/Instance");
NamespaceUris = namespaceUris;
m_cache = new NodeIdDictionary <NodeState>();
// create the directory.
string absolutePath = Utils.GetAbsoluteDirectoryPath(systemRoot, true, false, true);
// create the system.
m_system = new FileSystemMonitor(
SystemContext,
absolutePath,
server.NamespaceUris.GetIndexOrAppend(namespaceUris[1]),
Lock);
// update the default context.
SystemContext.SystemHandle = m_system;
}
/// <summary>
/// Initializes the test with session, configuration and logger.
/// </summary>
public TestBase(
string name,
Session session,
ServerTestConfiguration configuration,
ReportMessageEventHandler reportMessage,
ReportProgressEventHandler reportProgress,
TestBase template)
{
m_name = name;
m_session = session;
m_configuration = configuration;
m_reportMessage = reportMessage;
m_reportProgress = reportProgress;
if (template != null && Object.ReferenceEquals(session, template.m_session))
{
m_blockSize = template.BlockSize;
m_availableNodes = template.m_availableNodes;
m_writeableVariables = template.m_writeableVariables;
}
else
{
m_blockSize = 1000;
m_availableNodes = new NodeIdDictionary <Node>();
m_writeableVariables = new List <VariableNode>();
}
}
/// <summary>
/// Creates an empty hierarchy.
/// </summary>
public InstanceDeclarationHierarchy()
{
m_declarations = new NodeIdDictionary <HierarchyBrowsePath>();
m_instances = new NodeIdDictionary <INode>();
m_browsePaths = new SortedDictionary <string, HierarchyBrowsePath>();
m_references = new List <HierarchyReference>();
}
/// <summary>
/// Initializes the node manager.
/// </summary>
public FileSystemNodeManager(Opc.Ua.Server.IServerInternal server, string systemRoot)
:
base(server)
{
List<string> namespaceUris = new List<string>();
namespaceUris.Add(Namespaces.FileSystem);
namespaceUris.Add(Namespaces.FileSystem + "/Instance");
NamespaceUris = namespaceUris;
m_cache = new NodeIdDictionary<NodeState>();
// create the directory.
string absolutePath = Utils.GetAbsoluteDirectoryPath(systemRoot, true, false, true);
// create the system.
m_system = new FileSystemMonitor(
SystemContext,
absolutePath,
server.NamespaceUris.GetIndexOrAppend(namespaceUris[1]),
Lock);
// update the default context.
SystemContext.SystemHandle = m_system;
}
/// <summary>
/// Initializes the test with session, configuration and logger.
/// </summary>
public TestBase(
string name,
Session session,
ServerTestConfiguration configuration,
ReportMessageEventHandler reportMessage,
ReportProgressEventHandler reportProgress,
TestBase template)
{
m_name = name;
m_session = session;
m_configuration = configuration;
m_reportMessage = reportMessage;
m_reportProgress = reportProgress;
if (template != null && Object.ReferenceEquals(session, template.m_session))
{
m_blockSize = template.BlockSize;
m_availableNodes = template.m_availableNodes;
m_writeableVariables = template.m_writeableVariables;
}
else
{
m_blockSize = 1000;
m_availableNodes = new NodeIdDictionary<Node>();
m_writeableVariables = new List<VariableNode>();
}
}
/// <summary>
/// Initializes the object with default values.
/// </summary>
/// <param name="namespaceUris">The namespace URIs.</param>
public TypeTable(NamespaceTable namespaceUris)
{
m_namespaceUris = namespaceUris;
m_referenceTypes = new SortedDictionary <QualifiedName, TypeInfo>();
m_nodes = new NodeIdDictionary <TypeInfo>();
m_encodings = new NodeIdDictionary <TypeInfo>();
}
/// <summary>
/// Initializes the object with default values.
/// </summary>
/// <param name="namespaceUris">The namespace URIs.</param>
public TypeTable(NamespaceTable namespaceUris)
{
m_namespaceUris = namespaceUris;
m_referenceTypes = new SortedDictionary<QualifiedName,TypeInfo>();
m_nodes = new NodeIdDictionary<TypeInfo>();
m_encodings = new NodeIdDictionary<TypeInfo>();
}
/// <summary>
/// Fetches the event type information from the AE server.
/// </summary>
public void LoadTypes(Opc.Ua.Client.Session client, IServerInternal server, NamespaceMapper mapper)
{
TypeNodes = new NodeIdDictionary <ReferenceDescription>();
LoadTypes(client, server, mapper, Opc.Ua.ObjectTypeIds.BaseObjectType);
LoadTypes(client, server, mapper, Opc.Ua.VariableTypeIds.BaseVariableType);
LoadTypes(client, server, mapper, Opc.Ua.DataTypeIds.BaseDataType);
LoadTypes(client, server, mapper, Opc.Ua.ReferenceTypeIds.References);
}
/// <summary>
/// Fetches the event type information from the AE server.
/// </summary>
public void LoadTypes(Opc.Ua.Client.Session client, IServerInternal server, NamespaceMapper mapper)
{
TypeNodes = new NodeIdDictionary<ReferenceDescription>();
LoadTypes(client, server, mapper, Opc.Ua.ObjectTypeIds.BaseObjectType);
LoadTypes(client, server, mapper, Opc.Ua.VariableTypeIds.BaseVariableType);
LoadTypes(client, server, mapper, Opc.Ua.DataTypeIds.BaseDataType);
LoadTypes(client, server, mapper, Opc.Ua.ReferenceTypeIds.References);
}
/// <summary>
/// Sets the lock for the phase.
/// </summary>
public void SetPhaseLock(NodeId phaseId, NodeId lockId)
{
if (m_mapping == null)
{
m_mapping = new NodeIdDictionary <NodeId>();
}
m_mapping[phaseId] = lockId;
}
/// <summary>
/// Sets the lock for the phase.
/// </summary>
public void SetPhaseLock(NodeId phaseId, NodeId lockId)
{
if (m_mapping == null)
{
m_mapping = new NodeIdDictionary<NodeId>();
}
m_mapping[phaseId] = lockId;
}
/// <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>
/// Initializes the object.
/// </summary>
/// <param name="namespaceUris">The namespace URIs.</param>
/// <param name="serverUris">The server URIs.</param>
/// <param name="typeTree">The type tree.</param>
public NodeTable(
NamespaceTable namespaceUris,
StringTable serverUris,
TypeTable typeTree)
{
m_namespaceUris = namespaceUris;
m_serverUris = serverUris;
m_typeTree = typeTree;
m_localNodes = new NodeIdDictionary <ILocalNode>();
m_remoteNodes = new SortedDictionary <ExpandedNodeId, RemoteNode>();
}
/// <summary>
/// Adds a subtype to the object.
/// </summary>
/// <param name="subType">The subtype</param>
public void AddSubType(TypeInfo subType)
{
if (subType != null)
{
if (SubTypes == null)
{
SubTypes = new NodeIdDictionary <TypeInfo>();
}
SubTypes[subType.NodeId] = subType;
}
}
/// <summary>
/// Remove subtype.
/// </summary>
/// <param name="subtypeId">The subtype identifier.</param>
public void RemoveSubType(NodeId subtypeId)
{
if (subtypeId != null && SubTypes != null)
{
SubTypes.Remove(subtypeId);
if (SubTypes.Count == 0)
{
SubTypes = null;
}
}
}
/// <summary>
/// Updates the list of area filters.
/// </summary>
private void UpdateAreaFilter(List <NodeId> areas)
{
// check if monitoring all events.
if (areas == null || areas.Count == 0)
{
MonitoredItem monitoredItem = null;
if (!m_notifiers.TryGetValue(Opc.Ua.ObjectIds.Server, out monitoredItem))
{
monitoredItem = CreateMonitoredItem(Opc.Ua.ObjectIds.Server);
}
m_notifiers.Clear();
m_notifiers[Opc.Ua.ObjectIds.Server] = monitoredItem;
return;
}
// build table of areas to monitor.
NodeIdDictionary <MonitoredItem> notifiers = new NodeIdDictionary <MonitoredItem>();
// map all of the area search strings onto NodeIds for notifiers.
for (int ii = 0; ii < areas.Count; ii++)
{
NodeId areaId = areas[ii];
// check for existing item.
MonitoredItem monitoredItem = null;
if (m_notifiers.TryGetValue(areaId, out monitoredItem))
{
notifiers[areaId] = monitoredItem;
continue;
}
// check for new item.
if (!notifiers.ContainsKey(areaId))
{
notifiers[areaId] = CreateMonitoredItem(areaId);
}
}
// mark unused items for deletion.
foreach (MonitoredItem monitoredItem in m_notifiers.Values)
{
if (!notifiers.ContainsKey(monitoredItem.StartNodeId))
{
m_subscription.RemoveItem(monitoredItem);
}
}
m_notifiers = notifiers;
}
/// <summary>
/// Checks the isInverse flag are returns true if a specified target exists.
/// </summary>
/// <param name="entry">The entry.</param>
/// <param name="reference">The reference.</param>
/// <returns>
/// <c>true</c> if the specified entry contains key; otherwise, <c>false</c>.
/// </returns>
private static bool ContainsKey(ReferenceTypeEntry entry, IReference reference)
{
// handle reference to external targets.
if (reference.TargetId.IsAbsolute)
{
Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (reference.IsInverse)
{
targets = entry.InverseExternalTargets;
}
else
{
targets = entry.ForwardExternalTargets;
}
if (targets == null)
{
return(false);
}
return(targets.ContainsKey(reference.TargetId));
}
// handle reference to internal target.
else
{
NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (reference.IsInverse)
{
targets = entry.InverseTargets;
}
else
{
targets = entry.ForwardTargets;
}
if (targets == null)
{
return(false);
}
return(targets.ContainsKey((NodeId)reference.TargetId));
}
}
/// <summary>
/// Initializes the node manager.
/// </summary>
public CustomNodeManager2(IServerInternal server)
{
// save a reference to the server that owns the node manager.
m_server = server;
// create the default context.
m_systemContext = m_server.DefaultSystemContext.Copy();
m_systemContext.SystemHandle = null;
m_systemContext.NodeIdFactory = this;
// create the table of nodes.
m_predefinedNodes = new NodeIdDictionary<NodeState>();
m_rootNotifiers = new List<NodeState>();
m_sampledItems = new List<DataChangeMonitoredItem>();
m_minimumSamplingInterval = 100;
}
/// <summary>
/// Initializes the node manager.
/// </summary>
public DsatsDemoNodeManager(IServerInternal server, ApplicationConfiguration configuration)
:
base(server, DsatsDemo.Namespaces.DsatsDemo, DsatsDemo.Namespaces.DsatsDemo + "/Instance")
{
SystemContext.NodeIdFactory = this;
// get the configuration for the node manager.
m_configuration = configuration.ParseExtension <DsatsDemoServerConfiguration>();
// use suitable defaults if no configuration exists.
if (m_configuration == null)
{
m_configuration = new DsatsDemoServerConfiguration();
}
m_source = new DataSourceClient(configuration);
m_sessionLocks = new NodeIdDictionary <List <NodeId> >();
}
/// <summary>
/// Registers a type with the factory.
/// </summary>
/// <param name="typeDefinitionId">The type definition.</param>
/// <param name="type">The system type.</param>
public void RegisterType(NodeId typeDefinitionId, Type type)
{
if (NodeId.IsNull(typeDefinitionId))
{
throw new ArgumentNullException("typeDefinitionId");
}
if (type == null)
{
throw new ArgumentNullException("type");
}
if (m_types == null)
{
m_types = new NodeIdDictionary <Type>();
}
m_types[typeDefinitionId] = type;
}
/// <summary>
/// Initializes the node manager.
/// </summary>
public DsatsDemoNodeManager(IServerInternal server, ApplicationConfiguration configuration)
:
base(server, DsatsDemo.Namespaces.DsatsDemo, DsatsDemo.Namespaces.DsatsDemo +"/Instance")
{
SystemContext.NodeIdFactory = this;
// get the configuration for the node manager.
m_configuration = configuration.ParseExtension<DsatsDemoServerConfiguration>();
// use suitable defaults if no configuration exists.
if (m_configuration == null)
{
m_configuration = new DsatsDemoServerConfiguration();
}
m_source = new DataSourceClient(configuration);
m_sessionLocks = new NodeIdDictionary<List<NodeId>>();
}
/// <summary>
/// Initializes the object with the default values.
/// </summary>
public Group(
Server server,
object serverLock,
string name,
int serverHandle,
int clientHandle,
int updateRate,
bool active,
float deadband,
int lcid,
int timebias,
Subscription subscription,
NodeIdDictionary<CachedValue> cache)
{
// register interface for a group object as a connection point.
RegisterInterface(typeof(OpcRcw.Da.IOPCDataCallback).GUID);
// all the groups use the same lock as the server object.
// this is necessary because the session/subscription objects are not thread safe.
m_lock = serverLock;
// set default values.
m_server = server;
m_subscription = subscription;
m_session = subscription.Session;
m_name = name;
m_serverHandle = serverHandle;
m_clientHandle = clientHandle;
m_updateRate = updateRate;
m_active = false;
m_deadband = deadband;
m_lcid = lcid;
m_timebias = timebias;
m_enabled = true;
m_advised = false;
m_cache = cache;
m_defaultKeepAliveCount = subscription.KeepAliveCount;
this.PublishStateChanged(active, null);
}
/// <summary>
/// Initializes a new instance of the <see cref="ComHdaBrowser"/> class.
/// </summary>
public ComAe2Subscription(
ComAe2Proxy server,
ComAe2ProxyConfiguration configuration,
ComAeNamespaceMapper mapper,
ComAe2Browser browser,
AeConditionManager conditionManager)
{
m_server = server;
m_configuration = configuration;
m_mapper = mapper;
m_browser = browser;
m_conditionManager = conditionManager;
m_filter = new AeEventFilter(m_mapper);
m_queue = new Queue <AeEvent>();
m_notifiers = new NodeIdDictionary <MonitoredItem>();
m_sourceNodes = new List <NodeId>();
// set a default filters.
m_filter.SetFilter(Constants.ALL_EVENTS, 0, UInt16.MaxValue, null, null);
UpdateAreaFilter(null);
UpdateSourceFilter(null);
}
/// <summary>
/// Initializes a new instance of the <see cref="ComHdaBrowser"/> class.
/// </summary>
public ComAe2Subscription(
ComAe2Proxy server,
ComAe2ProxyConfiguration configuration,
ComAeNamespaceMapper mapper,
ComAe2Browser browser,
AeConditionManager conditionManager)
{
m_server = server;
m_configuration = configuration;
m_mapper = mapper;
m_browser = browser;
m_conditionManager = conditionManager;
m_filter = new AeEventFilter(m_mapper);
m_queue = new Queue<AeEvent>();
m_notifiers = new NodeIdDictionary<MonitoredItem>();
m_sourceNodes = new List<NodeId>();
// set a default filters.
m_filter.SetFilter(Constants.ALL_EVENTS, 0, UInt16.MaxValue, null, null);
UpdateAreaFilter(null);
UpdateSourceFilter(null);
}
/// <summary>
/// Initializes the mapper.
/// </summary>
public void Initialize(Session session, ComAe2ProxyConfiguration configuration)
{
base.Initialize(session, configuration);
m_session = session;
// discard the table.
m_eventTypes = new NodeIdDictionary <AeEventCategory>();
m_categories = new Dictionary <uint, AeEventCategory>();
m_attributes = new Dictionary <uint, AeEventAttribute>();
// load the well known types from an embedded resource.
IndexWellKnownTypes();
// browse the server for additional types.
if (!configuration.UseOnlyBuiltInTypes)
{
IndexTypesFromServer(Opc.Ua.ObjectTypeIds.BaseEventType, OpcRcw.Ae.Constants.SIMPLE_EVENT);
}
// check for existing category mapping.
NodeIdMappingSet mappingSet = configuration.GetMappingSet("EventCategories");
// update mappings.
UpdateEventTypeMappings(mappingSet);
// update configuration.
configuration.ReplaceMappingSet(mappingSet);
// check for existing attribute mapping.
mappingSet = configuration.GetMappingSet("EventAttributes");
// update mappings.
UpdateEventAttributeMappings(mappingSet);
// update configuration.
configuration.ReplaceMappingSet(mappingSet);
}
/// <summary>
/// Initializes the mapper.
/// </summary>
public void Initialize(Session session, ComAe2ProxyConfiguration configuration)
{
base.Initialize(session, configuration);
m_session = session;
// discard the table.
m_eventTypes = new NodeIdDictionary<AeEventCategory>();
m_categories = new Dictionary<uint, AeEventCategory>();
m_attributes = new Dictionary<uint, AeEventAttribute>();
// load the well known types from an embedded resource.
IndexWellKnownTypes();
// browse the server for additional types.
if (!configuration.UseOnlyBuiltInTypes)
{
IndexTypesFromServer(Opc.Ua.ObjectTypeIds.BaseEventType, OpcRcw.Ae.Constants.SIMPLE_EVENT);
}
// check for existing category mapping.
NodeIdMappingSet mappingSet = configuration.GetMappingSet("EventCategories");
// update mappings.
UpdateEventTypeMappings(mappingSet);
// update configuration.
configuration.ReplaceMappingSet(mappingSet);
// check for existing attribute mapping.
mappingSet = configuration.GetMappingSet("EventAttributes");
// update mappings.
UpdateEventAttributeMappings(mappingSet);
// update configuration.
configuration.ReplaceMappingSet(mappingSet);
}
/// <summary>
/// Updates the object after a reconnect.
/// </summary>
public void OnSessionReconected(Session session)
{
ThrowIfDisposed();
lock (m_lock)
{
foreach (Subscription subscription in session.Subscriptions)
{
if (Object.ReferenceEquals(this, subscription.Handle))
{
m_subscription = subscription;
m_notifiers = new NodeIdDictionary <MonitoredItem>();
foreach (MonitoredItem monitoredItem in subscription.MonitoredItems)
{
m_notifiers[monitoredItem.StartNodeId] = monitoredItem;
}
break;
}
}
}
}
/// <summary>
/// Creates a new set of monitored items for a set of variables.
/// </summary>
/// <remarks>
/// This method only handles data change subscriptions. Event subscriptions are created by the SDK.
/// </remarks>
public override void CreateMonitoredItems(
OperationContext context,
uint subscriptionId,
double publishingInterval,
TimestampsToReturn timestampsToReturn,
IList <MonitoredItemCreateRequest> itemsToCreate,
IList <ServiceResult> errors,
IList <MonitoringFilterResult> filterResults,
IList <IMonitoredItem> monitoredItems,
ref long globalIdCounter)
{
ServerSystemContext systemContext = _defaultSystemContext.Copy(context);
IDictionary <NodeId, NodeState> operationCache = new NodeIdDictionary <NodeState>();
List <NodeHandle> nodesToValidate = new List <NodeHandle>();
List <IMonitoredItem> createdItems = new List <IMonitoredItem>();
lock (Lock)
{
for (int ii = 0; ii < itemsToCreate.Count; ii++)
{
MonitoredItemCreateRequest monitoredItemCreateRequest = itemsToCreate[ii];
// skip items that have already been processed.
if (monitoredItemCreateRequest.Processed)
{
continue;
}
ReadValueId itemToMonitor = monitoredItemCreateRequest.ItemToMonitor;
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, itemToMonitor.NodeId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
monitoredItemCreateRequest.Processed = true;
// must validate node in a seperate operation.
errors[ii] = StatusCodes.BadNodeIdUnknown;
handle.Index = ii;
nodesToValidate.Add(handle);
}
// check for nothing to do.
if (nodesToValidate.Count == 0)
{
return;
}
}
// validates the nodes (reads values from the underlying data source if required).
for (int ii = 0; ii < nodesToValidate.Count; ii++)
{
NodeHandle handle = nodesToValidate[ii];
MonitoringFilterResult filterResult = null;
IMonitoredItem monitoredItem = null;
lock (Lock)
{
// validate node.
NodeState source = ValidateNode(systemContext, handle, operationCache);
if (source == null)
{
continue;
}
MonitoredItemCreateRequest itemToCreate = itemsToCreate[handle.Index];
// create monitored item.
errors[handle.Index] = CreateMonitoredItem(
systemContext,
handle,
subscriptionId,
publishingInterval,
context.DiagnosticsMask,
timestampsToReturn,
itemToCreate,
ref globalIdCounter,
out filterResult,
out monitoredItem);
}
// save any filter error details.
filterResults[handle.Index] = filterResult;
if (ServiceResult.IsBad(errors[handle.Index]))
{
continue;
}
// save the monitored item.
monitoredItems[handle.Index] = monitoredItem;
createdItems.Add(monitoredItem);
}
// do any post processing.
OnCreateMonitoredItemsComplete(systemContext, createdItems);
}
/// <summary>
/// Calls a method on the specified nodes.
/// </summary>
public override void Call(
OperationContext context,
IList <CallMethodRequest> methodsToCall,
IList <CallMethodResult> results,
IList <ServiceResult> errors)
{
ServerSystemContext systemContext = SystemContext.Copy(context);
IDictionary <NodeId, NodeState> operationCache = new NodeIdDictionary <NodeState>();
bool didRefresh = false;
for (int ii = 0; ii < methodsToCall.Count; ii++)
{
CallMethodRequest methodToCall = methodsToCall[ii];
bool refreshMethod = methodToCall.MethodId.Equals(Opc.Ua.MethodIds.ConditionType_ConditionRefresh) ||
methodToCall.MethodId.Equals(Opc.Ua.MethodIds.ConditionType_ConditionRefresh2);
if (refreshMethod)
{
if (didRefresh)
{
errors[ii] = StatusCodes.BadRefreshInProgress;
methodToCall.Processed = true;
continue;
}
else
{
didRefresh = true;
}
}
bool ackMethod = methodToCall.MethodId.Equals(Opc.Ua.MethodIds.AcknowledgeableConditionType_Acknowledge);
bool confirmMethod = methodToCall.MethodId.Equals(Opc.Ua.MethodIds.AcknowledgeableConditionType_Confirm);
bool commentMethod = methodToCall.MethodId.Equals(Opc.Ua.MethodIds.ConditionType_AddComment);
bool ackConfirmMethod = ackMethod || confirmMethod || commentMethod;
// Need to try to capture any calls to ConditionType::Acknowledge
if (methodToCall.ObjectId.Equals(Opc.Ua.ObjectTypeIds.ConditionType) && (ackConfirmMethod))
{
// Mantis Issue 6944 which is a duplicate of 5544 - result is Confirm should be Bad_NodeIdInvalid
// Override any other errors that may be there, even if this is 'Processed'
errors[ii] = StatusCodes.BadNodeIdInvalid;
methodToCall.Processed = true;
continue;
}
// skip items that have already been processed.
if (methodToCall.Processed)
{
continue;
}
MethodState method = null;
lock (Lock)
{
// check for valid handle.
NodeHandle initialHandle = GetManagerHandle(systemContext, methodToCall.ObjectId, operationCache);
if (initialHandle == null)
{
if (ackConfirmMethod)
{
// Mantis 6944
errors[ii] = StatusCodes.BadNodeIdUnknown;
methodToCall.Processed = true;
}
continue;
}
// owned by this node manager.
methodToCall.Processed = true;
// Look for an alarm branchId to operate on.
NodeHandle handle = FindBranchNodeHandle(systemContext, initialHandle, methodToCall);
// validate the source node.
NodeState source = ValidateNode(systemContext, handle, operationCache);
if (source == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
continue;
}
// find the method.
method = source.FindMethod(systemContext, methodToCall.MethodId);
if (method == null)
{
// check for loose coupling.
if (source.ReferenceExists(ReferenceTypeIds.HasComponent, false, methodToCall.MethodId))
{
method = (MethodState)FindPredefinedNode(methodToCall.MethodId, typeof(MethodState));
}
if (method == null)
{
errors[ii] = StatusCodes.BadMethodInvalid;
continue;
}
}
}
// call the method.
CallMethodResult result = results[ii] = new CallMethodResult();
errors[ii] = Call(
systemContext,
methodToCall,
method,
result);
}
}
/// <summary>
/// Updates the object after a reconnect.
/// </summary>
public void OnSessionReconected(Session session)
{
ThrowIfDisposed();
lock (m_lock)
{
foreach (Subscription subscription in session.Subscriptions)
{
if (Object.ReferenceEquals(this, subscription.Handle))
{
m_subscription = subscription;
m_notifiers = new NodeIdDictionary<MonitoredItem>();
foreach (MonitoredItem monitoredItem in subscription.MonitoredItems)
{
m_notifiers[monitoredItem.StartNodeId] = monitoredItem;
}
break;
}
}
}
}
/// <summary>
/// Reads the value for the specified attribute.
/// </summary>
public override void Read(
OperationContext context,
double maxAge,
IList <ReadValueId> nodesToRead,
IList <DataValue> values,
IList <ServiceResult> errors)
{
ServerSystemContext systemContext = SystemContext.Copy(context);
IDictionary <NodeId, NodeState> operationCache = new NodeIdDictionary <NodeState>();
List <DataSourceClient.ReadRequest> readRequests = new List <DataSourceClient.ReadRequest>();
lock (Lock)
{
for (int ii = 0; ii < nodesToRead.Count; ii++)
{
ReadValueId nodeToRead = nodesToRead[ii];
// skip items that have already been processed.
if (nodeToRead.Processed)
{
continue;
}
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, nodeToRead.NodeId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
nodeToRead.Processed = true;
// create an initial value.
DataValue value = values[ii] = new DataValue();
value.Value = null;
value.ServerTimestamp = DateTime.UtcNow;
value.SourceTimestamp = DateTime.MinValue;
value.StatusCode = StatusCodes.Good;
// check if the node is a area in memory.
if (handle.Node == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
continue;
}
if (nodeToRead.AttributeId == Attributes.Value)
{
// check if the request if for a remote node.
RemoteNode remoteNode = null;
if (m_remoteNodes.TryGetValue(handle.NodeId, out remoteNode))
{
DataSourceClient.ReadRequest request = new DataSourceClient.ReadRequest();
request.RemoteId = remoteNode.RemoteId;
request.ReadValueId = nodeToRead;
request.Value = value;
request.Index = ii;
readRequests.Add(request);
errors[ii] = StatusCodes.BadNoCommunication;
continue;
}
}
// read the attribute value.
errors[ii] = handle.Node.ReadAttribute(
systemContext,
nodeToRead.AttributeId,
nodeToRead.ParsedIndexRange,
nodeToRead.DataEncoding,
value);
}
// check for nothing to do.
if (readRequests.Count == 0)
{
return;
}
}
// read from the remote data source.
List <ServiceResult> results = m_source.Read(readRequests);
for (int ii = 0; ii < readRequests.Count; ii++)
{
values[readRequests[ii].Index] = readRequests[ii].Value;
errors[readRequests[ii].Index] = results[ii];
}
}
/// <summary>
/// Subscribes or unsubscribes to events produced by all event sources.
/// </summary>
/// <remarks>
/// This method is called when a event subscription is created or deleted. The node
/// manager must start/stop reporting events for all objects that it manages.
/// </remarks>
public virtual ServiceResult SubscribeToAllEvents(
OperationContext context,
uint subscriptionId,
IEventMonitoredItem monitoredItem,
bool unsubscribe)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
lock (Lock)
{
// update root notifiers.
for (int ii = 0; ii < m_rootNotifiers.Count; ii++)
{
SubscribeToAllEvents(
systemContext,
monitoredItem,
unsubscribe,
m_rootNotifiers[ii]);
}
return ServiceResult.Good;
}
}
/// <summary>
/// Calls a method on the specified nodes.
/// </summary>
public virtual void Call(
OperationContext context,
IList<CallMethodRequest> methodsToCall,
IList<CallMethodResult> results,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<CallOperationState> nodesToValidate = new List<CallOperationState>();
lock (Lock)
{
for (int ii = 0; ii < methodsToCall.Count; ii++)
{
CallMethodRequest methodToCall = methodsToCall[ii];
// skip items that have already been processed.
if (methodToCall.Processed)
{
continue;
}
// check for valid handle.
NodeState source = GetManagerHandle(systemContext, methodToCall.ObjectId, operationCache) as NodeState;
if (source == null)
{
continue;
}
// owned by this node manager.
methodToCall.Processed = true;
// check for valid method.
MethodState method = GetManagerHandle(systemContext, methodToCall.MethodId, operationCache) as MethodState;
if (method == null)
{
errors[ii] = StatusCodes.BadMethodInvalid;
continue;
}
// check if method belongs to the object.
if (!Object.ReferenceEquals(method.Parent, source))
{
errors[ii] = StatusCodes.BadMethodInvalid;
continue;
}
CallMethodResult result = results[ii] = new CallMethodResult();
// check if the node is ready for reading.
if (source.ValidationRequired)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation.
CallOperationState operation = new CallOperationState();
operation.Source = source;
operation.Method = method;
operation.Index = ii;
nodesToValidate.Add(operation);
continue;
}
// call the method.
errors[ii] = Call(
systemContext,
methodToCall,
source,
method,
result);
}
// check for nothing to do.
if (nodesToValidate.Count == 0)
{
return;
}
// validates the nodes (reads values from the underlying data source if required).
for (int ii = 0; ii < nodesToValidate.Count; ii++)
{
CallOperationState operation = nodesToValidate[ii];
// validate the object.
if (!ValidateNode(systemContext, operation.Source))
{
continue;
}
// call the method.
CallMethodResult result = results[operation.Index];
errors[operation.Index] = Call(
systemContext,
methodsToCall[operation.Index],
operation.Source,
operation.Method,
result);
}
}
}
/// <summary>
/// Writes the value for the specified attributes.
/// </summary>
public virtual void Write(
OperationContext context,
IList<WriteValue> nodesToWrite,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<ReadWriteOperationState> nodesToValidate = new List<ReadWriteOperationState>();
lock (Lock)
{
for (int ii = 0; ii < nodesToWrite.Count; ii++)
{
WriteValue nodeToWrite = nodesToWrite[ii];
// skip items that have already been processed.
if (nodeToWrite.Processed)
{
continue;
}
// check for valid handle.
NodeState source = GetManagerHandle(systemContext, nodeToWrite.NodeId, operationCache) as NodeState;
if (source == null)
{
continue;
}
// owned by this node manager.
nodeToWrite.Processed = true;
// index range is not supported.
if (!String.IsNullOrEmpty(nodeToWrite.IndexRange))
{
errors[ii] = StatusCodes.BadIndexRangeInvalid;
continue;
}
// check if the node is ready for reading.
if (source.ValidationRequired)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation.
ReadWriteOperationState operation = new ReadWriteOperationState();
operation.Source = source;
operation.Index = ii;
nodesToValidate.Add(operation);
continue;
}
// write the attribute value.
errors[ii] = source.WriteAttribute(
systemContext,
nodeToWrite.AttributeId,
nodeToWrite.ParsedIndexRange,
nodeToWrite.Value);
// updates to source finished - report changes to monitored items.
source.ClearChangeMasks(systemContext, false);
}
// check for nothing to do.
if (nodesToValidate.Count == 0)
{
return;
}
// validates the nodes (reads values from the underlying data source if required).
for (int ii = 0; ii < nodesToValidate.Count; ii++)
{
ReadWriteOperationState operation = nodesToValidate[ii];
if (!ValidateNode(systemContext, operation.Source))
{
continue;
}
WriteValue nodeToWrite = nodesToWrite[operation.Index];
// write the attribute value.
errors[operation.Index] = operation.Source.WriteAttribute(
systemContext,
nodeToWrite.AttributeId,
nodeToWrite.ParsedIndexRange,
nodeToWrite.Value);
// updates to source finished - report changes to monitored items.
operation.Source.ClearChangeMasks(systemContext, false);
}
}
}
/// <summary>
/// Indexes the well known subtypes.
/// </summary>
private void IndexWellKnownTypes()
{
SystemContext context = new SystemContext();
context.EncodeableFactory = m_session.MessageContext.Factory;
context.NamespaceUris = m_session.NamespaceUris;
context.ServerUris = m_session.ServerUris;
NodeStateCollection predefinedNodes = new NodeStateCollection();
predefinedNodes.LoadFromBinaryResource(context, "Opc.Ua.Stack.Generated.Opc.Ua.PredefinedNodes.uanodes", typeof(NodeState).Assembly, true);
NodeIdDictionary <BaseTypeState> types = new NodeIdDictionary <BaseTypeState>();
// collect the instance declarations for all types.
for (int ii = 0; ii < predefinedNodes.Count; ii++)
{
BaseTypeState type = predefinedNodes[ii] as BaseTypeState;
if (type != null)
{
types.Add(type.NodeId, type);
}
}
// index only those types which are subtypes of BaseEventType.
foreach (BaseTypeState type in types.Values)
{
BaseTypeState subType = type;
BaseTypeState superType = null;
int eventType = 0;
while (subType != null)
{
if (subType.NodeId == Opc.Ua.ObjectTypeIds.ConditionType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.ConditionType)
{
eventType = OpcRcw.Ae.Constants.CONDITION_EVENT;
}
else if (subType.NodeId == Opc.Ua.ObjectTypeIds.AuditEventType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.AuditEventType)
{
eventType = OpcRcw.Ae.Constants.TRACKING_EVENT;
}
else if (subType.NodeId == Opc.Ua.ObjectTypeIds.BaseEventType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.BaseEventType)
{
eventType = OpcRcw.Ae.Constants.SIMPLE_EVENT;
}
// found an event, collect the attribute and index it.
if (eventType != 0)
{
List <AeEventAttribute> declarations = new List <AeEventAttribute>();
Dictionary <string, AeEventAttribute> map = new Dictionary <string, AeEventAttribute>();
ComAeUtils.CollectInstanceDeclarations(
m_session,
this,
type,
null,
declarations,
map);
AeEventCategory declaration = new AeEventCategory();
declaration.TypeId = type.NodeId;
declaration.SuperTypeId = type.SuperTypeId;
declaration.EventType = eventType;
declaration.Description = (LocalizedText.IsNullOrEmpty(type.DisplayName))?type.BrowseName.Name:type.DisplayName.Text;
declaration.Attributes = declarations;
m_eventTypes[declaration.TypeId] = declaration;
break;
}
// follow the tree to the parent.
if (!types.TryGetValue(subType.SuperTypeId, out superType))
{
break;
}
subType = superType;
}
}
// hide the built in attributes.
AeEventCategory category = GetCategory(Opc.Ua.ObjectTypeIds.BaseEventType);
if (category != null)
{
for (int ii = 0; ii < category.Attributes.Count; ii++)
{
switch (category.Attributes[ii].BrowsePathDisplayText)
{
case Opc.Ua.BrowseNames.Message:
case Opc.Ua.BrowseNames.Severity:
case Opc.Ua.BrowseNames.SourceName:
case Opc.Ua.BrowseNames.Time:
case Opc.Ua.BrowseNames.ReceiveTime:
case Opc.Ua.BrowseNames.LocalTime:
{
category.Attributes[ii].Hidden = true;
break;
}
}
}
}
}
/// <summary>
/// Writes the value for the specified attributes.
/// </summary>
public override void Write(
OperationContext context,
IList<WriteValue> nodesToWrite,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = SystemContext.Copy(context);
IDictionary<NodeId, NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<DataSourceClient.WriteRequest> writeRequests = new List<DataSourceClient.WriteRequest>();
lock (Lock)
{
for (int ii = 0; ii < nodesToWrite.Count; ii++)
{
WriteValue nodeToWrite = nodesToWrite[ii];
// skip items that have already been processed.
if (nodeToWrite.Processed)
{
continue;
}
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, nodeToWrite.NodeId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
nodeToWrite.Processed = true;
// index range is not supported.
if (nodeToWrite.AttributeId != Attributes.Value)
{
if (!String.IsNullOrEmpty(nodeToWrite.IndexRange))
{
errors[ii] = StatusCodes.BadWriteNotSupported;
continue;
}
}
// check if the node is a area in memory.
if (handle.Node == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
continue;
}
// check if the request if for a remote node.
RemoteNode remoteNode = null;
if (m_remoteNodes.TryGetValue(handle.NodeId, out remoteNode))
{
// check for theorectical access.
BaseVariableState variable = handle.Node as BaseVariableState;
if (variable == null || nodeToWrite.AttributeId != Attributes.Value || (variable.AccessLevel & AccessLevels.CurrentWrite) == 0)
{
errors[ii] = StatusCodes.BadNotWritable;
continue;
}
// check for access based on current user credentials.
if (!CheckWriteAccess(systemContext, remoteNode))
{
errors[ii] = StatusCodes.BadUserAccessDenied;
continue;
}
DataSourceClient.WriteRequest request = new DataSourceClient.WriteRequest();
request.RemoteId = remoteNode.RemoteId;
request.WriteValue = nodeToWrite;
request.Index = ii;
writeRequests.Add(request);
errors[ii] = StatusCodes.BadNoCommunication;
continue;
}
// write the attribute value.
errors[ii] = handle.Node.WriteAttribute(
systemContext,
nodeToWrite.AttributeId,
nodeToWrite.ParsedIndexRange,
nodeToWrite.Value);
// updates to source finished - report changes to monitored items.
handle.Node.ClearChangeMasks(systemContext, false);
}
// check for nothing to do.
if (writeRequests.Count == 0)
{
return;
}
}
// update the remote data source.
List<ServiceResult> results = m_source.Write(writeRequests);
for (int ii = 0; ii < writeRequests.Count; ii++)
{
errors[writeRequests[ii].Index] = results[ii];
}
}
/// <summary>
/// Writes the value for the specified attributes.
/// </summary>
public virtual void Write(
OperationContext context,
IList<WriteValue> nodesToWrite,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<NodeHandle> nodesToValidate = new List<NodeHandle>();
lock (Lock)
{
for (int ii = 0; ii < nodesToWrite.Count; ii++)
{
WriteValue nodeToWrite = nodesToWrite[ii];
// skip items that have already been processed.
if (nodeToWrite.Processed)
{
continue;
}
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, nodeToWrite.NodeId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
nodeToWrite.Processed = true;
// index range is not supported.
if (nodeToWrite.AttributeId != Attributes.Value)
{
if (!String.IsNullOrEmpty(nodeToWrite.IndexRange))
{
errors[ii] = StatusCodes.BadWriteNotSupported;
continue;
}
}
// check if the node is a area in memory.
if (handle.Node == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation.
handle.Index = ii;
nodesToValidate.Add(handle);
continue;
}
// Utils.Trace("WRITE: Value={0} Range={1}", nodeToWrite.Value.WrappedValue, nodeToWrite.IndexRange);
// write the attribute value.
errors[ii] = handle.Node.WriteAttribute(
systemContext,
nodeToWrite.AttributeId,
nodeToWrite.ParsedIndexRange,
nodeToWrite.Value);
// updates to source finished - report changes to monitored items.
handle.Node.ClearChangeMasks(systemContext, false);
}
// check for nothing to do.
if (nodesToValidate.Count == 0)
{
return;
}
}
// validates the nodes and writes the value to the underlying system.
Write(
systemContext,
nodesToWrite,
errors,
nodesToValidate,
operationCache);
}
/// <summary>
/// Recursively indexes the node and its children.
/// </summary>
protected virtual void AddPredefinedNode(ISystemContext context, NodeState node)
{
if (m_predefinedNodes == null)
{
m_predefinedNodes = new NodeIdDictionary<NodeState>();
}
NodeState activeNode = AddBehaviourToPredefinedNode(context, node);
m_predefinedNodes[activeNode.NodeId] = activeNode;
BaseTypeState type = activeNode as BaseTypeState;
if (type != null)
{
AddTypesToTypeTree(type);
}
List<BaseInstanceState> children = new List<BaseInstanceState>();
activeNode.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
AddPredefinedNode(context, children[ii]);
}
}
/// <summary>
/// Loads a node set from a file or resource and addes them to the set of predefined nodes.
/// </summary>
public virtual void LoadPredefinedNodes(
ISystemContext context,
Assembly assembly,
string resourcePath,
IDictionary<NodeId, IList<IReference>> externalReferences)
{
if (m_predefinedNodes == null)
{
m_predefinedNodes = new NodeIdDictionary<NodeState>();
}
// load the predefined nodes from an XML document.
NodeStateCollection predefinedNodes = new NodeStateCollection();
predefinedNodes.LoadFromResource(context, resourcePath, assembly, true);
// add the predefined nodes to the node manager.
for (int ii = 0; ii < predefinedNodes.Count; ii++)
{
AddPredefinedNode(context, predefinedNodes[ii]);
}
// ensure the reverse refernces exist.
AddReverseReferences(externalReferences);
}
/// <summary>
/// Reads the history for the specified nodes.
/// </summary>
public virtual void HistoryRead(
OperationContext context,
HistoryReadDetails details,
TimestampsToReturn timestampsToReturn,
bool releaseContinuationPoints,
IList<HistoryReadValueId> nodesToRead,
IList<HistoryReadResult> results,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<NodeHandle> nodesToProcess = new List<NodeHandle>();
lock (Lock)
{
for (int ii = 0; ii < nodesToRead.Count; ii++)
{
HistoryReadValueId nodeToRead = nodesToRead[ii];
// skip items that have already been processed.
if (nodeToRead.Processed)
{
continue;
}
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, nodeToRead.NodeId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
nodeToRead.Processed = true;
// create an initial result.
HistoryReadResult result = results[ii] = new HistoryReadResult();
result.HistoryData = null;
result.ContinuationPoint = null;
result.StatusCode = StatusCodes.Good;
// check if the node is a area in memory.
if (handle.Node == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation
handle.Index = ii;
nodesToProcess.Add(handle);
continue;
}
errors[ii] = StatusCodes.BadHistoryOperationUnsupported;
// check for data history variable.
BaseVariableState variable = handle.Node as BaseVariableState;
if (variable != null)
{
if ((variable.AccessLevel & AccessLevels.HistoryRead) != 0)
{
handle.Index = ii;
nodesToProcess.Add(handle);
continue;
}
}
// check for event history object.
BaseObjectState notifier = handle.Node as BaseObjectState;
if (notifier != null)
{
if ((notifier.EventNotifier & EventNotifiers.HistoryRead) != 0)
{
handle.Index = ii;
nodesToProcess.Add(handle);
continue;
}
}
}
// check for nothing to do.
if (nodesToProcess.Count == 0)
{
return;
}
}
// validates the nodes (reads values from the underlying data source if required).
HistoryRead(
systemContext,
details,
timestampsToReturn,
releaseContinuationPoints,
nodesToRead,
results,
errors,
nodesToProcess,
operationCache);
}
/// <summary>
/// Calls a method on the specified nodes.
/// </summary>
public virtual void Call(
OperationContext context,
IList<CallMethodRequest> methodsToCall,
IList<CallMethodResult> results,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = SystemContext.Copy(context);
IDictionary<NodeId, NodeState> operationCache = new NodeIdDictionary<NodeState>();
for (int ii = 0; ii < methodsToCall.Count; ii++)
{
CallMethodRequest methodToCall = methodsToCall[ii];
// skip items that have already been processed.
if (methodToCall.Processed)
{
continue;
}
MethodState method = null;
lock (Lock)
{
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, methodToCall.ObjectId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
methodToCall.Processed = true;
// validate the source node.
NodeState source = ValidateNode(systemContext, handle, operationCache);
if (source == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
continue;
}
// find the method.
method = source.FindMethod(systemContext, methodToCall.MethodId);
if (method == null)
{
// check for loose coupling.
if (source.ReferenceExists(ReferenceTypeIds.HasComponent, false, methodToCall.MethodId))
{
method = (MethodState)FindPredefinedNode(methodToCall.MethodId, typeof(MethodState));
}
if (method == null)
{
errors[ii] = StatusCodes.BadMethodInvalid;
continue;
}
}
}
// call the method.
CallMethodResult result = results[ii] = new CallMethodResult();
errors[ii] = Call(
systemContext,
methodToCall,
method,
result);
}
}
/// <summary>
/// Reads the history for the specified nodes.
/// </summary>
public virtual void HistoryRead(
OperationContext context,
HistoryReadDetails details,
TimestampsToReturn timestampsToReturn,
bool releaseContinuationPoints,
IList<HistoryReadValueId> nodesToRead,
IList<HistoryReadResult> results,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<ReadWriteOperationState> nodesToValidate = new List<ReadWriteOperationState>();
List<ReadWriteOperationState> readsToComplete = new List<ReadWriteOperationState>();
lock (Lock)
{
for (int ii = 0; ii < nodesToRead.Count; ii++)
{
HistoryReadValueId nodeToRead = nodesToRead[ii];
// skip items that have already been processed.
if (nodeToRead.Processed)
{
continue;
}
// check for valid handle.
NodeState source = GetManagerHandle(systemContext, nodeToRead.NodeId, operationCache) as NodeState;
if (source == null)
{
continue;
}
// owned by this node manager.
nodeToRead.Processed = true;
// only variables supported.
BaseVariableState variable = source as BaseVariableState;
if (variable == null)
{
errors[ii] = StatusCodes.BadHistoryOperationUnsupported;
continue;
}
results[ii] = new HistoryReadResult();
ReadWriteOperationState operation = new ReadWriteOperationState();
operation.Source = source;
operation.Index = ii;
// check if the node is ready for reading.
if (source.ValidationRequired)
{
// must validate node in a seperate operation.
errors[ii] = StatusCodes.BadNodeIdUnknown;
nodesToValidate.Add(operation);
continue;
}
// read the data.
readsToComplete.Add(operation);
}
// validates the nodes (reads values from the underlying data source if required).
for (int ii = 0; ii < nodesToValidate.Count; ii++)
{
ReadWriteOperationState operation = nodesToValidate[ii];
if (!ValidateNode(systemContext, operation.Source))
{
continue;
}
readsToComplete.Add(operation);
}
}
// reads the data without holding onto the lock.
for (int ii = 0; ii < readsToComplete.Count; ii++)
{
ReadWriteOperationState operation = readsToComplete[ii];
errors[operation.Index] = HistoryRead(
systemContext,
operation.Source,
details,
timestampsToReturn,
releaseContinuationPoints,
nodesToRead[operation.Index],
results[operation.Index]);
}
}
/// <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 history for the specified nodes.
/// </summary>
public virtual void HistoryUpdate(
OperationContext context,
Type detailsType,
IList<HistoryUpdateDetails> nodesToUpdate,
IList<HistoryUpdateResult> results,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<ReadWriteOperationState> nodesToValidate = new List<ReadWriteOperationState>();
lock (Lock)
{
for (int ii = 0; ii < nodesToUpdate.Count; ii++)
{
HistoryUpdateDetails nodeToUpdate = nodesToUpdate[ii];
// skip items that have already been processed.
if (nodeToUpdate.Processed)
{
continue;
}
// check for valid handle.
NodeState source = GetManagerHandle(systemContext, nodeToUpdate.NodeId, operationCache) as NodeState;
if (source == null)
{
continue;
}
// owned by this node manager.
nodeToUpdate.Processed = true;
// check if the node is ready for reading.
if (source.ValidationRequired)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation.
ReadWriteOperationState operation = new ReadWriteOperationState();
operation.Source = source;
operation.Index = ii;
nodesToValidate.Add(operation);
continue;
}
// historical data not available.
errors[ii] = StatusCodes.BadHistoryOperationUnsupported;
}
// check for nothing to do.
if (nodesToValidate.Count == 0)
{
return;
}
// validates the nodes (reads values from the underlying data source if required).
for (int ii = 0; ii < nodesToValidate.Count; ii++)
{
ReadWriteOperationState operation = nodesToValidate[ii];
if (!ValidateNode(systemContext, operation.Source))
{
continue;
}
// historical data not available.
errors[ii] = StatusCodes.BadHistoryOperationUnsupported;
}
}
}
/// <summary>
/// Returns the target entry associated with the reference.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The target entry associated with the reference.</returns>
private bool TryGetEntry(IReference key, out KeyValuePair <IReference, T> value)
{
value = new KeyValuePair <IReference, T>();
// validate key.
if (!ValidateReference(key, false))
{
return(false);
}
// look up the reference type.
ReferenceTypeEntry entry = null;
if (!m_references.TryGetValue(key.ReferenceTypeId, out entry))
{
return(false);
}
// handle reference to external targets.
if (key.TargetId.IsAbsolute)
{
Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseExternalTargets;
}
else
{
targets = entry.ForwardExternalTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (targets.TryGetValue(key.TargetId, out node))
{
value = node.Value;
return(true);
}
}
// handle reference to internal target.
else
{
NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseTargets;
}
else
{
targets = entry.ForwardTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (targets.TryGetValue((NodeId)key.TargetId, out node))
{
value = node.Value;
return(true);
}
}
return(false);
}
/// <summary>
/// Subscribes or unsubscribes to events produced by the specified source.
/// </summary>
/// <remarks>
/// This method is called when a event subscription is created or deletes. The node manager
/// must start/stop reporting events for the specified object and all objects below it in
/// the notifier hierarchy.
/// </remarks>
public virtual ServiceResult SubscribeToEvents(
OperationContext context,
object sourceId,
uint subscriptionId,
IEventMonitoredItem monitoredItem,
bool unsubscribe)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
lock (Lock)
{
// check for valid handle.
NodeState source = IsHandleInNamespace(sourceId);
if (source == null)
{
return StatusCodes.BadNodeIdInvalid;
}
// check if the object supports subscritions.
BaseObjectState instance = sourceId as BaseObjectState;
if (instance == null || instance.EventNotifier != EventNotifiers.SubscribeToEvents)
{
return StatusCodes.BadNotSupported;
}
MonitoredNode monitoredNode = instance.Handle as MonitoredNode;
// handle unsubscribe.
if (unsubscribe)
{
if (monitoredNode != null)
{
monitoredNode.UnsubscribeToEvents(systemContext, monitoredItem);
// do any post processing.
OnUnsubscribeToEvents(systemContext, monitoredNode, monitoredItem);
}
return ServiceResult.Good;
}
// subscribe to events.
if (monitoredNode == null)
{
instance.Handle = monitoredNode = new MonitoredNode(m_server, this, source);
}
monitoredNode.SubscribeToEvents(systemContext, monitoredItem);
// do any post processing.
OnSubscribeToEvents(systemContext, monitoredNode, monitoredItem);
return ServiceResult.Good;
}
}
/// <summary>
/// Adds or replaces a reference.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <param name="replace">if set to <c>true</c> reference is replaced.</param>
private void Add(IReference key, T value, bool replace)
{
// validate key.
ValidateReference(key, true);
m_version++;
// look up the reference type.
ReferenceTypeEntry entry = null;
if (!m_references.TryGetValue(key.ReferenceTypeId, out entry))
{
entry = new ReferenceTypeEntry();
m_references.Add(key.ReferenceTypeId, entry);
}
// handle reference to external targets.
if (key.TargetId.IsAbsolute)
{
Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
if (entry.InverseExternalTargets == null)
{
entry.InverseExternalTargets = new Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.InverseExternalTargets;
}
else
{
if (entry.ForwardExternalTargets == null)
{
entry.ForwardExternalTargets = new Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.ForwardExternalTargets;
}
// create a new target.
LinkedListNode <KeyValuePair <IReference, T> > node = new LinkedListNode <KeyValuePair <IReference, T> >(new KeyValuePair <IReference, T>(key, value));
// check if target already exists.
LinkedListNode <KeyValuePair <IReference, T> > existingNode = null;
if (!targets.TryGetValue(key.TargetId, out existingNode))
{
existingNode = node;
m_list.AddLast(node);
}
// need to replace reference in linked linked as well as the target list.
else
{
if (!replace)
{
throw new ArgumentException("Key already exists in dictionary.", "key");
}
m_list.AddAfter(existingNode, node);
m_list.Remove(existingNode);
}
targets[key.TargetId] = node;
}
// handle reference to internal target.
else
{
NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
if (entry.InverseTargets == null)
{
entry.InverseTargets = new NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.InverseTargets;
}
else
{
if (entry.ForwardTargets == null)
{
entry.ForwardTargets = new NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.ForwardTargets;
}
NodeId targetId = (NodeId)key.TargetId;
// create a new target.
LinkedListNode <KeyValuePair <IReference, T> > node = new LinkedListNode <KeyValuePair <IReference, T> >(new KeyValuePair <IReference, T>(key, value));
// check if target already exists.
LinkedListNode <KeyValuePair <IReference, T> > existingNode = null;
if (!targets.TryGetValue(targetId, out existingNode))
{
existingNode = node;
m_list.AddLast(node);
}
// need to replace reference in linked linked as well as the target list.
else
{
if (!replace)
{
throw new ArgumentException("Key already exists in dictionary.", "key");
}
m_list.AddAfter(existingNode, node);
m_list.Remove(existingNode);
}
targets[targetId] = node;
}
}
/// <summary>
/// Creates a new set of monitored items for a set of variables.
/// </summary>
/// <remarks>
/// This method only handles data change subscriptions. Event subscriptions are created by the SDK.
/// </remarks>
public virtual void CreateMonitoredItems(
OperationContext context,
uint subscriptionId,
double publishingInterval,
TimestampsToReturn timestampsToReturn,
IList<MonitoredItemCreateRequest> itemsToCreate,
IList<ServiceResult> errors,
IList<MonitoringFilterResult> filterErrors,
IList<IMonitoredItem> monitoredItems,
ref long globalIdCounter)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<ReadWriteOperationState> nodesToValidate = new List<ReadWriteOperationState>();
lock (Lock)
{
for (int ii = 0; ii < itemsToCreate.Count; ii++)
{
MonitoredItemCreateRequest itemToCreate = itemsToCreate[ii];
// skip items that have already been processed.
if (itemToCreate.Processed)
{
continue;
}
ReadValueId itemToMonitor = itemToCreate.ItemToMonitor;
// check for valid handle.
NodeState source = GetManagerHandle(systemContext, itemToMonitor.NodeId, operationCache) as NodeState;
if (source == null)
{
continue;
}
// owned by this node manager.
itemToCreate.Processed = true;
// check if the node is ready for reading.
if (source.ValidationRequired)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation.
ReadWriteOperationState operation = new ReadWriteOperationState();
operation.Source = source;
operation.Index = ii;
nodesToValidate.Add(operation);
continue;
}
MonitoringFilterResult filterError = null;
IMonitoredItem monitoredItem = null;
errors[ii] = CreateMonitoredItem(
systemContext,
source,
subscriptionId,
publishingInterval,
context.DiagnosticsMask,
timestampsToReturn,
itemToCreate,
ref globalIdCounter,
out filterError,
out monitoredItem);
// save any filter error details.
filterErrors[ii] = filterError;
if (ServiceResult.IsBad(errors[ii]))
{
continue;
}
// save the monitored item.
monitoredItems[ii] = monitoredItem;
}
// check for nothing to do.
if (nodesToValidate.Count == 0)
{
return;
}
// validates the nodes (reads values from the underlying data source if required).
for (int ii = 0; ii < nodesToValidate.Count; ii++)
{
ReadWriteOperationState operation = nodesToValidate[ii];
// validate the object.
if (!ValidateNode(systemContext, operation.Source))
{
continue;
}
MonitoredItemCreateRequest itemToCreate = itemsToCreate[operation.Index];
MonitoringFilterResult filterError = null;
IMonitoredItem monitoredItem = null;
errors[operation.Index] = CreateMonitoredItem(
systemContext,
operation.Source,
subscriptionId,
publishingInterval,
context.DiagnosticsMask,
timestampsToReturn,
itemToCreate,
ref globalIdCounter,
out filterError,
out monitoredItem);
// save any filter error details.
filterErrors[operation.Index] = filterError;
if (ServiceResult.IsBad(errors[operation.Index]))
{
continue;
}
// save the monitored item.
monitoredItems[operation.Index] = monitoredItem;
}
}
}
/// <summary>
/// Writes the value for the specified attributes.
/// </summary>
public override void Write(
OperationContext context,
IList <WriteValue> nodesToWrite,
IList <ServiceResult> errors)
{
ServerSystemContext systemContext = SystemContext.Copy(context);
IDictionary <NodeId, NodeState> operationCache = new NodeIdDictionary <NodeState>();
List <DataSourceClient.WriteRequest> writeRequests = new List <DataSourceClient.WriteRequest>();
lock (Lock)
{
for (int ii = 0; ii < nodesToWrite.Count; ii++)
{
WriteValue nodeToWrite = nodesToWrite[ii];
// skip items that have already been processed.
if (nodeToWrite.Processed)
{
continue;
}
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, nodeToWrite.NodeId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
nodeToWrite.Processed = true;
// index range is not supported.
if (nodeToWrite.AttributeId != Attributes.Value)
{
if (!String.IsNullOrEmpty(nodeToWrite.IndexRange))
{
errors[ii] = StatusCodes.BadWriteNotSupported;
continue;
}
}
// check if the node is a area in memory.
if (handle.Node == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
continue;
}
// check if the request if for a remote node.
RemoteNode remoteNode = null;
if (m_remoteNodes.TryGetValue(handle.NodeId, out remoteNode))
{
// check for theorectical access.
BaseVariableState variable = handle.Node as BaseVariableState;
if (variable == null || nodeToWrite.AttributeId != Attributes.Value || (variable.AccessLevel & AccessLevels.CurrentWrite) == 0)
{
errors[ii] = StatusCodes.BadNotWritable;
continue;
}
// check for access based on current user credentials.
if (!CheckWriteAccess(systemContext, remoteNode))
{
errors[ii] = StatusCodes.BadUserAccessDenied;
continue;
}
DataSourceClient.WriteRequest request = new DataSourceClient.WriteRequest();
request.RemoteId = remoteNode.RemoteId;
request.WriteValue = nodeToWrite;
request.Index = ii;
writeRequests.Add(request);
errors[ii] = StatusCodes.BadNoCommunication;
continue;
}
// write the attribute value.
errors[ii] = handle.Node.WriteAttribute(
systemContext,
nodeToWrite.AttributeId,
nodeToWrite.ParsedIndexRange,
nodeToWrite.Value);
// updates to source finished - report changes to monitored items.
handle.Node.ClearChangeMasks(systemContext, false);
}
// check for nothing to do.
if (writeRequests.Count == 0)
{
return;
}
}
// update the remote data source.
List <ServiceResult> results = m_source.Write(writeRequests);
for (int ii = 0; ii < writeRequests.Count; ii++)
{
errors[writeRequests[ii].Index] = results[ii];
}
}
void LoadDataSourceSources(
ISystemContext context,
ToolState tool,
DsatsDemo.DataSource.DataSource datasource,
DsatsDemo.DataSource.DeclarationType declaration)
{
if (declaration == null || declaration.Sources == null)
{
return;
}
// need to ensure the server's tables are not updated when loading this file.
ServerSystemContext context2 = new ServerSystemContext(this.Server);
context2.NamespaceUris = new NamespaceTable();
context2.ServerUris = new StringTable();
context2.NodeIdFactory = this;
context2.NamespaceUris.Append(context.ServerUris.GetString(0));
context2.ServerUris.Append(context.ServerUris.GetString(0));
foreach (DsatsDemo.DataSource.SourceType source in declaration.Sources)
{
BaseInstanceState child = tool.FindChildBySymbolicName(context, source.Path);
if (child == null)
{
continue;
}
if (source.DefaultValue != null)
{
BaseVariableState variable = child as BaseVariableState;
if (variable != null)
{
try
{
Variant value = datasource.Read(context, source.DefaultValue);
variable.WrappedValue = value;
}
catch (Exception)
{
Utils.Trace("Could not read Variant in file. {0}", source.DefaultValue.InnerXml);
}
}
}
if (source.RemoteId != null)
{
ExpandedNodeId remoteId = datasource.ReadExpandedNodeId(context2, source.RemoteId);
if (m_remoteNodes == null)
{
m_remoteNodes = new NodeIdDictionary <RemoteNode>();
}
RemoteNode remoteNode = new RemoteNode();
remoteNode.Tool = tool;
remoteNode.ServerUrl = context2.ServerUris.GetString(remoteId.ServerIndex);
remoteNode.LocalNode = child;
remoteNode.RemoteId = remoteId;
m_remoteNodes.Add(child.NodeId, remoteNode);
}
}
}
/// <summary>
/// Creates an empty dictionary.
/// </summary>
public IReferenceDictionary()
{
m_version = 0;
m_references = new NodeIdDictionary <ReferenceTypeEntry>();
m_list = new LinkedList <KeyValuePair <IReference, T> >();
}
/// <summary>
/// Updates the list of area filters.
/// </summary>
private void UpdateAreaFilter(List<NodeId> areas)
{
// check if monitoring all events.
if (areas == null || areas.Count == 0)
{
MonitoredItem monitoredItem = null;
if (!m_notifiers.TryGetValue(Opc.Ua.ObjectIds.Server, out monitoredItem))
{
monitoredItem = CreateMonitoredItem(Opc.Ua.ObjectIds.Server);
}
m_notifiers.Clear();
m_notifiers[Opc.Ua.ObjectIds.Server] = monitoredItem;
return;
}
// build table of areas to monitor.
NodeIdDictionary<MonitoredItem> notifiers = new NodeIdDictionary<MonitoredItem>();
// map all of the area search strings onto NodeIds for notifiers.
for (int ii = 0; ii < areas.Count; ii++)
{
NodeId areaId = areas[ii];
// check for existing item.
MonitoredItem monitoredItem = null;
if (m_notifiers.TryGetValue(areaId, out monitoredItem))
{
notifiers[areaId] = monitoredItem;
continue;
}
// check for new item.
if (!notifiers.ContainsKey(areaId))
{
notifiers[areaId] = CreateMonitoredItem(areaId);
}
}
// mark unused items for deletion.
foreach (MonitoredItem monitoredItem in m_notifiers.Values)
{
if (!notifiers.ContainsKey(monitoredItem.StartNodeId))
{
m_subscription.RemoveItem(monitoredItem);
}
}
m_notifiers = notifiers;
}
/// <summary cref="IDictionary.Remove" />
public bool Remove(IReference key)
{
// validate key.
if (!ValidateReference(key, false))
{
return(false);
}
m_version++;
// look up the reference type.
ReferenceTypeEntry entry = null;
if (!m_references.TryGetValue(key.ReferenceTypeId, out entry))
{
return(false);
}
// handle reference to external targets.
if (key.TargetId.IsAbsolute)
{
Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseExternalTargets;
}
else
{
targets = entry.ForwardExternalTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (!targets.TryGetValue(key.TargetId, out node))
{
return(false);
}
m_list.Remove(node);
targets.Remove(key.TargetId);
}
// handle reference to internal target.
else
{
NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseTargets;
}
else
{
targets = entry.ForwardTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (!targets.TryGetValue((NodeId)key.TargetId, out node))
{
return(false);
}
m_list.Remove(node);
targets.Remove((NodeId)key.TargetId);
}
// remove empty reference.
if (entry.IsEmpty)
{
m_references.Remove(key.ReferenceTypeId);
}
return(true);
}
/// <summary>
/// Returns the target of the specified browse path fragment(s).
/// </summary>
/// <remarks>
/// If reference exists but the node manager does not know the browse name it must
/// return the NodeId as an unresolvedTargetIds. The caller will try to check the
/// browse name.
/// </remarks>
public virtual void TranslateBrowsePath(
OperationContext context,
object sourceHandle,
RelativePathElement relativePath,
IList<ExpandedNodeId> targetIds,
IList<NodeId> unresolvedTargetIds)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
lock (Lock)
{
// verify that the node exists.
NodeState source = IsHandleInNamespace(sourceHandle);
if (source == null)
{
return;
}
// validate node.
if (!ValidateNode(systemContext, source))
{
return;
}
// get list of references that relative path.
INodeBrowser browser = source.CreateBrowser(
systemContext,
null,
relativePath.ReferenceTypeId,
relativePath.IncludeSubtypes,
(relativePath.IsInverse) ? BrowseDirection.Inverse : BrowseDirection.Forward,
relativePath.TargetName,
null,
false);
// check the browse names.
try
{
for (IReference reference = browser.Next(); reference != null; reference = browser.Next())
{
// ignore unknown external references.
if (reference.TargetId.IsAbsolute)
{
continue;
}
NodeState target = null;
// check for local reference.
NodeStateReference referenceInfo = reference as NodeStateReference;
if (referenceInfo != null)
{
target = referenceInfo.Target;
}
if (target == null)
{
NodeId targetId = (NodeId)reference.TargetId;
// the target may be a reference to a node in another node manager.
if (!IsNodeIdInNamespace(targetId))
{
unresolvedTargetIds.Add((NodeId)reference.TargetId);
continue;
}
// look up the target manually.
target = GetManagerHandle(systemContext, targetId, operationCache) as NodeState;
if (target == null)
{
continue;
}
}
// check browse name.
if (target.BrowseName == relativePath.TargetName)
{
targetIds.Add(reference.TargetId);
}
}
}
finally
{
browser.Dispose();
}
}
}
/// <summary>
/// Reads the value for the specified attribute.
/// </summary>
public virtual void Read(
OperationContext context,
double maxAge,
IList<ReadValueId> nodesToRead,
IList<DataValue> values,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId,NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<ReadWriteOperationState> nodesToValidate = new List<ReadWriteOperationState>();
lock (Lock)
{
for (int ii = 0; ii < nodesToRead.Count; ii++)
{
ReadValueId nodeToRead = nodesToRead[ii];
// skip items that have already been processed.
if (nodeToRead.Processed)
{
continue;
}
// check for valid handle.
NodeState source = GetManagerHandle(systemContext, nodeToRead.NodeId, operationCache) as NodeState;
if (source == null)
{
continue;
}
// owned by this node manager.
nodeToRead.Processed = true;
// create an initial value.
DataValue value = values[ii] = new DataValue();
value.Value = null;
value.ServerTimestamp = DateTime.UtcNow;
value.SourceTimestamp = DateTime.MinValue;
value.StatusCode = StatusCodes.Good;
// check if the node is ready for reading.
if (source.ValidationRequired)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation.
ReadWriteOperationState operation = new ReadWriteOperationState();
operation.Source = source;
operation.Index = ii;
nodesToValidate.Add(operation);
continue;
}
// read the attribute value.
errors[ii] = source.ReadAttribute(
systemContext,
nodeToRead.AttributeId,
nodeToRead.ParsedIndexRange,
nodeToRead.DataEncoding,
value);
}
// check for nothing to do.
if (nodesToValidate.Count == 0)
{
return;
}
// validates the nodes (reads values from the underlying data source if required).
for (int ii = 0; ii < nodesToValidate.Count; ii++)
{
ReadWriteOperationState operation = nodesToValidate[ii];
if (!ValidateNode(systemContext, operation.Source))
{
continue;
}
ReadValueId nodeToRead = nodesToRead[operation.Index];
DataValue value = values[operation.Index];
// update the attribute value.
errors[operation.Index] = operation.Source.ReadAttribute(
systemContext,
nodeToRead.AttributeId,
nodeToRead.ParsedIndexRange,
nodeToRead.DataEncoding,
value);
}
}
}
/// <summary>
/// Creates a new instance and assigns unique identifiers to all children.
/// </summary>
/// <param name="context">The operation context.</param>
/// <param name="parentId">An optional parent identifier.</param>
/// <param name="referenceTypeId">The reference type from the parent.</param>
/// <param name="browseName">The browse name.</param>
/// <param name="instance">The instance to create.</param>
/// <returns>The new node id.</returns>
public NodeId CreateNode(
ServerSystemContext context,
NodeId parentId,
NodeId referenceTypeId,
QualifiedName browseName,
BaseInstanceState instance)
{
ServerSystemContext contextToUse = (ServerSystemContext)m_systemContext.Copy(context);
lock (Lock)
{
if (m_predefinedNodes == null)
{
m_predefinedNodes = new NodeIdDictionary<NodeState>();
}
instance.ReferenceTypeId = referenceTypeId;
NodeState parent = null;
if (parentId != null)
{
if (!m_predefinedNodes.TryGetValue(parentId, out parent))
{
throw ServiceResultException.Create(
StatusCodes.BadNodeIdUnknown,
"Cannot find parent with id: {0}",
parentId);
}
parent.AddChild(instance);
}
instance.Create(contextToUse, null, browseName, null, true);
AddPredefinedNode(contextToUse, instance);
return instance.NodeId;
}
}
/// <summary>
/// Updates the history for the specified nodes.
/// </summary>
public virtual void HistoryUpdate(
OperationContext context,
Type detailsType,
IList<HistoryUpdateDetails> nodesToUpdate,
IList<HistoryUpdateResult> results,
IList<ServiceResult> errors)
{
ServerSystemContext systemContext = m_systemContext.Copy(context);
IDictionary<NodeId, NodeState> operationCache = new NodeIdDictionary<NodeState>();
List<NodeHandle> nodesToProcess = new List<NodeHandle>();
lock (Lock)
{
for (int ii = 0; ii < nodesToUpdate.Count; ii++)
{
HistoryUpdateDetails nodeToUpdate = nodesToUpdate[ii];
// skip items that have already been processed.
if (nodeToUpdate.Processed)
{
continue;
}
// check for valid handle.
NodeHandle handle = GetManagerHandle(systemContext, nodeToUpdate.NodeId, operationCache);
if (handle == null)
{
continue;
}
// owned by this node manager.
nodeToUpdate.Processed = true;
// create an initial result.
HistoryUpdateResult result = results[ii] = new HistoryUpdateResult();
result.StatusCode = StatusCodes.Good;
// check if the node is a area in memory.
if (handle.Node == null)
{
errors[ii] = StatusCodes.BadNodeIdUnknown;
// must validate node in a seperate operation
handle.Index = ii;
nodesToProcess.Add(handle);
continue;
}
errors[ii] = StatusCodes.BadHistoryOperationUnsupported;
// check for data history variable.
BaseVariableState variable = handle.Node as BaseVariableState;
if (variable != null)
{
if ((variable.AccessLevel & AccessLevels.HistoryWrite) != 0)
{
handle.Index = ii;
nodesToProcess.Add(handle);
continue;
}
}
// check for event history object.
BaseObjectState notifier = handle.Node as BaseObjectState;
if (notifier != null)
{
if ((notifier.EventNotifier & EventNotifiers.HistoryWrite) != 0)
{
handle.Index = ii;
nodesToProcess.Add(handle);
continue;
}
}
}
// check for nothing to do.
if (nodesToProcess.Count == 0)
{
return;
}
}
// validates the nodes and updates.
HistoryUpdate(
systemContext,
detailsType,
nodesToUpdate,
results,
errors,
nodesToProcess,
operationCache);
}
