/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public Browser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly,
Opc.Ua.Client.Session client,
NamespaceMapper mapper,
NodeState source,
NodeId rootId)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_client = client;
m_mapper = mapper;
m_source = source;
m_rootId = rootId;
m_stage = Stage.Begin;
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
/// <param name="context">The system context to use.</param>
/// <param name="view">The view which may restrict the set of references/nodes found.</param>
/// <param name="referenceType">The type of references being followed.</param>
/// <param name="includeSubtypes">Whether subtypes of the reference type are followed.</param>
/// <param name="browseDirection">Which way the references are being followed.</param>
/// <param name="browseName">The browse name of a specific target (used when translating browse paths).</param>
/// <param name="additionalReferences">Any additional references that should be included.</param>
/// <param name="internalOnly">If true the browser should not making blocking calls to external systems.</param>
/// <param name="itemId">The item id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public DaElementBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly,
string itemId,
ushort namespaceIndex)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_itemId = itemId;
m_namespaceIndex = namespaceIndex;
m_stage = Stage.Begin;
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public NodeBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly)
{
m_context = context;
m_view = view;
m_referenceType = referenceType;
m_includeSubtypes = includeSubtypes;
m_browseDirection = browseDirection;
m_browseName = browseName;
m_internalOnly = internalOnly;
m_references = new List<IReference>();
m_index = 0;
// add any additional references if they meet the criteria.
if (additionalReferences != null)
{
foreach (IReference reference in additionalReferences)
{
if (IsRequired(reference.ReferenceTypeId, reference.IsInverse))
{
m_references.Add(reference);
}
}
}
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public AreaBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly,
AreaState area)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_stage = Stage.Begin;
if (area != null)
{
m_area = AreaState.GetDirectory(context, area.NodeId);
m_isRoot = area.IsRoot;
}
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public NodeBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly)
{
m_context = context;
m_view = view;
m_referenceType = referenceType;
m_includeSubtypes = includeSubtypes;
m_browseDirection = browseDirection;
m_browseName = browseName;
m_internalOnly = internalOnly;
m_references = new List <IReference>();
m_index = 0;
// add any additional references if they meet the criteria.
if (additionalReferences != null)
{
foreach (IReference reference in additionalReferences)
{
if (IsRequired(reference.ReferenceTypeId, reference.IsInverse))
{
m_references.Add(reference);
}
}
}
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public AreaBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly,
AreaState area)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_stage = Stage.Begin;
if (area != null)
{
m_area = AreaState.GetDirectory(context, area.NodeId);
m_isRoot = area.IsRoot;
}
}
/// <summary>
/// Creates a browser that finds the references to the branch.
/// </summary>
/// <param name="context">The system context to use.</param>
/// <param name="view">The view which may restrict the set of references/nodes found.</param>
/// <param name="referenceType">The type of references being followed.</param>
/// <param name="includeSubtypes">Whether subtypes of the reference type are followed.</param>
/// <param name="browseDirection">Which way the references are being followed.</param>
/// <param name="browseName">The browse name of a specific target (used when translating browse paths).</param>
/// <param name="additionalReferences">Any additional references that should be included.</param>
/// <param name="internalOnly">If true the browser should not making blocking calls to external systems.</param>
/// <returns>The browse object (must be disposed).</returns>
public override INodeBrowser CreateBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly)
{
NodeBrowser browser = new HdaElementBrower(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly,
m_itemId,
TypeDefinitionId,
BrowseName,
this.NodeId.NamespaceIndex);
PopulateBrowser(context, browser);
return(browser);
}
/// <summary>
/// Adds the targets of references to the control.
/// </summary>
private void AddReferences(NodeId referenceTypeId, BrowseDirection browseDirection)
{
// fetch the attributes for the reference type.
INode referenceType = m_session.NodeCache.Find(referenceTypeId);
if (referenceType == null)
{
return;
}
// browse for the references.
Browser browser = new Browser(m_session);
browser.BrowseDirection = browseDirection;
browser.ReferenceTypeId = referenceTypeId;
browser.IncludeSubtypes = true;
browser.NodeClassMask = 0;
browser.ContinueUntilDone = true;
ReferenceDescriptionCollection references = browser.Browse(m_nodeId);
// add results to list.
foreach (ReferenceDescription reference in references)
{
NodeField field = new NodeField();
field.Name = referenceType.ToString();
field.Value = reference.ToString();
field.StatusCode = StatusCodes.Good;
AddItem(field, "ReferenceType", -1);
}
}
/// <summary>
/// Creates a browser that explores the structure of the block.
/// </summary>
/// <param name="context">The system context to use.</param>
/// <param name="view">The view which may restrict the set of references/nodes found.</param>
/// <param name="referenceType">The type of references being followed.</param>
/// <param name="includeSubtypes">Whether subtypes of the reference type are followed.</param>
/// <param name="browseDirection">Which way the references are being followed.</param>
/// <param name="browseName">The browse name of a specific target (used when translating browse paths).</param>
/// <param name="additionalReferences">Any additional references that should be included.</param>
/// <param name="internalOnly">If true the browser should not making blocking calls to external systems.</param>
/// <returns>The browse object (must be disposed).</returns>
public override INodeBrowser CreateBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly)
{
NodeBrowser browser = new SegmentBrowser(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly,
this);
PopulateBrowser(context, browser);
return(browser);
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
/// <param name="context">The system context to use.</param>
/// <param name="view">The view which may restrict the set of references/nodes found.</param>
/// <param name="referenceType">The type of references being followed.</param>
/// <param name="includeSubtypes">Whether subtypes of the reference type are followed.</param>
/// <param name="browseDirection">Which way the references are being followed.</param>
/// <param name="browseName">The browse name of a specific target (used when translating browse paths).</param>
/// <param name="additionalReferences">Any additional references that should be included.</param>
/// <param name="internalOnly">If true the browser should not making blocking calls to external systems.</param>
/// <param name="itemId">The item id.</param>
/// <param name="namespaceIndex">Index of the namespace.</param>
public DaElementBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly,
string itemId,
ushort namespaceIndex)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_itemId = itemId;
m_namespaceIndex = namespaceIndex;
m_stage = Stage.Begin;
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public Browser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly,
Opc.Ua.Client.Session client,
NamespaceMapper mapper,
NodeState source,
NodeId rootId)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_client = client;
m_mapper = mapper;
m_source = source;
m_rootId = rootId;
m_stage = Stage.Begin;
}
/// <summary>
/// Displays the a root in the control.
/// </summary>
public void Initialize(
Session session,
NodeId rootId,
NodeId viewId,
NodeId referenceTypeId,
BrowseDirection browseDirection)
{
m_session = session;
m_rootId = rootId;
m_viewId = viewId;
m_referenceTypeId = referenceTypeId;
m_browseDirection = browseDirection;
NodesTV.Nodes.Clear();
if (m_session == null)
{
return;
}
if (NodeId.IsNull(m_rootId))
{
m_rootId = Objects.RootFolder;
}
if (NodeId.IsNull(m_referenceTypeId))
{
m_referenceTypeId = ReferenceTypeIds.HierarchicalReferences;
}
ReferenceTypeCTRL.Initialize(m_session, ReferenceTypeIds.HierarchicalReferences);
ReferenceTypeCTRL.SelectedTypeId = m_referenceTypeId;
ILocalNode root = m_session.NodeCache.Find(m_rootId) as ILocalNode;
if (root == null)
{
return;
}
ReferenceDescription reference = new ReferenceDescription();
reference.ReferenceTypeId = referenceTypeId;
reference.IsForward = true;
reference.NodeId = root.NodeId;
reference.NodeClass = root.NodeClass;
reference.BrowseName = root.BrowseName;
reference.DisplayName = root.DisplayName;
reference.TypeDefinition = root.TypeDefinitionId;
TreeNode rootNode = new TreeNode(reference.ToString());
rootNode.ImageKey = rootNode.SelectedImageKey = GuiUtils.GetTargetIcon(session, reference);
rootNode.Tag = reference;
rootNode.Nodes.Add(new TreeNode());
NodesTV.Nodes.Add(rootNode);
}
/// <summary>
/// Browse the tree nodes
/// </summary>
/// <param name="id"></param>
/// <param name="parentId"></param>
/// <param name="direction"></param>
private async Task BrowseTreeAsync(BrowseDirection direction, int index, bool isLoadingMore, string id = null, List <string> parentId = null)
{
IsLoading = true;
if (!isLoadingMore)
{
ParentId = parentId;
Items = await BrowseManager.GetTreeAsync(EndpointId,
id,
parentId,
DiscovererId,
direction,
index,
Credential);
}
else
{
Items = await BrowseManager.GetTreeNextAsync(EndpointId,
ParentId,
DiscovererId,
Credential,
Items);
}
PublishedNodes = await Publisher.PublishedAsync(EndpointId, false);
foreach (var node in Items.Results)
{
if (node.NodeClass == NodeClass.Variable)
{
node.Value = await BrowseManager.ReadValueAsync(EndpointId, node.Id, Credential);
// check if publishing enabled
foreach (var publishedNode in PublishedNodes.Results)
{
if (node.Id == publishedNode.PublishedItem.NodeId)
{
node.PublishedItem = publishedNode.PublishedItem;
node.Publishing = true;
break;
}
}
}
}
if (string.IsNullOrEmpty(DiscovererId))
{
NavigationManager.NavigateTo(NavigationManager.BaseUri + "browser/" + "/" + ApplicationId + "/" + EndpointId);
}
else
{
NavigationManager.NavigateTo(NavigationManager.BaseUri + "browser/" + "/" + DiscovererId + "/" + ApplicationId + "/" + SupervisorId + "/" + EndpointId);
}
IsLoading = false;
}
/// <summary>
/// Browse the tree nodes
/// </summary>
/// <param name="id"></param>
/// <param name="parentId"></param>
/// <param name="direction"></param>
private async Task BrowseTreeAsync(BrowseDirection direction, int index, bool firstPage, int page, string id = null, List <string> parentId = null)
{
CommonHelper.Spinner = "loader-big";
if (firstPage)
{
ParentId = parentId;
NodeList = await BrowseManager.GetTreeAsync(EndpointId,
id,
parentId,
DiscovererId,
direction,
index,
Credential);
}
else
{
NodeList = await BrowseManager.GetTreeNextAsync(EndpointId,
ParentId,
DiscovererId,
Credential,
NodeList);
}
PublishedNodes = await Publisher.PublishedAsync(EndpointId, false);
foreach (var node in NodeList.Results)
{
if (node.NodeClass == NodeClass.Variable)
{
// check if publishing enabled
foreach (var publishedNode in PublishedNodes.Results)
{
if (node.Id == publishedNode.PublishedItem.NodeId)
{
node.PublishedItem = publishedNode.PublishedItem;
node.Publishing = true;
break;
}
}
}
}
PagedNodeList = NodeList.GetPaged(page, CommonHelper.PageLength, NodeList.Error);
if (string.IsNullOrEmpty(DiscovererId))
{
NavigationManager.NavigateTo(NavigationManager.BaseUri + "browser/" + page + "/" + ApplicationId + "/" + EndpointId);
}
else
{
NavigationManager.NavigateTo(NavigationManager.BaseUri + "browser/" + page + "/" + DiscovererId + "/" + ApplicationId + "/" + SupervisorId + "/" + EndpointId);
}
CommonHelper.Spinner = "";
}
internal static string ToSerializedValue(this BrowseDirection value)
{
switch (value)
{
case BrowseDirection.Forward:
return("Forward");
case BrowseDirection.Backward:
return("Backward");
case BrowseDirection.Both:
return("Both");
}
return(null);
}
public BrowseDescription(
NodeId Id,
BrowseDirection Direction,
NodeId ReferenceType,
bool IncludeSubtypes,
uint NodeClassMask,
BrowseResultMask ResultMask)
{
this.Id = Id;
this.Direction = Direction;
this.ReferenceType = ReferenceType;
this.IncludeSubtypes = IncludeSubtypes;
this.NodeClassMask = NodeClassMask;
this.ResultMask = ResultMask;
}
/// <summary>
/// Convert browse direction
/// </summary>
/// <param name="mode"></param>
/// <returns></returns>
public static UaBrowseDirection ToStackType(this BrowseDirection mode)
{
switch (mode)
{
case BrowseDirection.Forward:
return(UaBrowseDirection.Forward);
case BrowseDirection.Backward:
return(UaBrowseDirection.Inverse);
case BrowseDirection.Both:
return(UaBrowseDirection.Both);
default:
return(UaBrowseDirection.Forward);
}
}
private void BrowseDirectionCTRL_SelectedIndexChanged(object sender, EventArgs e)
{
try {
m_browseDirection = (BrowseDirection)BrowseDirectionCTRL.SelectedItem;
if (NodesTV.SelectedNode != null)
{
NodesTV.SelectedNode.Collapse();
NodesTV.SelectedNode.Nodes.Clear();
NodesTV.SelectedNode.Nodes.Add(new TreeNode());
NodesTV.SelectedNode.Expand();
return;
}
} catch (Exception exception) {
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <summary>
/// Async browse service
/// </summary>
/// <param name="client"></param>
/// <param name="requestHeader"></param>
/// <param name="view"></param>
/// <param name="nodeToBrowse"></param>
/// <param name="maxResultsToReturn"></param>
/// <param name="browseDirection"></param>
/// <param name="referenceTypeId"></param>
/// <param name="includeSubtypes"></param>
/// <param name="nodeClassMask"></param>
/// <param name="resultMask"></param>
/// <param name="ct"></param>
/// <returns></returns>
public static Task <BrowseResponse> BrowseAsync(this SessionClient client,
RequestHeader requestHeader, ViewDescription view, NodeId nodeToBrowse,
uint maxResultsToReturn, BrowseDirection browseDirection,
NodeId referenceTypeId, bool includeSubtypes, uint nodeClassMask,
BrowseResultMask resultMask = BrowseResultMask.All, CancellationToken ct = default)
{
return(client.BrowseAsync(requestHeader, view, maxResultsToReturn,
new BrowseDescriptionCollection {
new BrowseDescription {
BrowseDirection = browseDirection,
IncludeSubtypes = includeSubtypes,
NodeClassMask = nodeClassMask,
NodeId = nodeToBrowse,
ReferenceTypeId = referenceTypeId,
ResultMask = (uint)resultMask
}
}, ct));
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public MemoryRegisterBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly,
MemoryRegisterState parent)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
_parent = parent;
_stage = Stage.Begin;
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
public MemoryBufferBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly,
MemoryBufferState buffer)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_buffer = buffer;
m_stage = Stage.Begin;
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
/// <param name="context">The system context to use.</param>
/// <param name="view">The view which may restrict the set of references/nodes found.</param>
/// <param name="referenceType">The type of references being followed.</param>
/// <param name="includeSubtypes">Whether subtypes of the reference type are followed.</param>
/// <param name="browseDirection">Which way the references are being followed.</param>
/// <param name="browseName">The browse name of a specific target (used when translating browse paths).</param>
/// <param name="additionalReferences">Any additional references that should be included.</param>
/// <param name="internalOnly">If true the browser should not making blocking calls to external systems.</param>
/// <param name="source">The segment being accessed.</param>
public ArchiveFolderBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly,
ArchiveFolderState source)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_source = source;
m_stage = Stage.Begin;
}
/// <summary>
/// Creates a new browser object with a set of filters.
/// </summary>
/// <param name="context">The system context to use.</param>
/// <param name="view">The view which may restrict the set of references/nodes found.</param>
/// <param name="referenceType">The type of references being followed.</param>
/// <param name="includeSubtypes">Whether subtypes of the reference type are followed.</param>
/// <param name="browseDirection">Which way the references are being followed.</param>
/// <param name="browseName">The browse name of a specific target (used when translating browse paths).</param>
/// <param name="additionalReferences">Any additional references that should be included.</param>
/// <param name="internalOnly">If true the browser should not making blocking calls to external systems.</param>
/// <param name="source">The segment being accessed.</param>
public SegmentBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable <IReference> additionalReferences,
bool internalOnly,
SegmentState source)
:
base(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly)
{
m_source = source;
m_stage = Stage.Begin;
}
public static Entry For(BrowseDirection direction)
{
string text = null;
switch (direction)
{
case BrowseDirection.Forward:
text = "Forward";
break;
case BrowseDirection.Inverse:
text = "Inverse";
break;
case BrowseDirection.Both:
text = "Both";
break;
case BrowseDirection.Invalid:
text = "Invalid";
break;
}
return(new StringEntry(text));
}
/// <summary>
/// Get tree
/// </summary>
/// <param name="endpointId"></param>
/// <param name="id"></param>
/// <param name="parentId"></param>
/// <param name="discovererId"></param>
/// <param name="direction"></param>
/// <returns>ListNode</returns>
public async Task <PagedResult <ListNode> > GetTreeAsync(string endpointId,
string id, List <string> parentId, string discovererId, BrowseDirection direction)
{
var pageResult = new PagedResult <ListNode>();
var model = new BrowseRequestApiModel {
TargetNodesOnly = true
};
if (direction == BrowseDirection.Forward)
{
model.MaxReferencesToReturn = _MAX_REFERENCES;
model.NodeId = id;
if (id == string.Empty)
{
Path = string.Empty;
}
}
else
{
model.NodeId = parentId.ElementAt(parentId.Count - 2);
}
try {
var browseData = await _twinService.NodeBrowseAsync(endpointId, model);
var continuationToken = browseData.ContinuationToken;
var references = browseData.References;
var browseDataNext = new BrowseNextResponseApiModel();
if (direction == BrowseDirection.Forward)
{
parentId.Add(browseData.Node.NodeId);
Path += "/" + browseData.Node.DisplayName;
}
else
{
parentId.RemoveAt(parentId.Count - 1);
Path = Path.Substring(0, Path.LastIndexOf("/"));
}
do
{
if (references != null)
{
foreach (var nodeReference in references)
{
pageResult.Results.Add(new ListNode {
Id = nodeReference.Target.NodeId.ToString(),
NodeClass = nodeReference.Target.NodeClass ?? 0,
NodeName = nodeReference.Target.DisplayName.ToString(),
Children = (bool)nodeReference.Target.Children,
ParentIdList = parentId,
DiscovererId = discovererId,
AccessLevel = nodeReference.Target.AccessLevel ?? 0,
ParentName = browseData.Node.DisplayName,
DataType = nodeReference.Target.DataType,
Value = string.Empty,
Publishing = false,
PublishedItem = null
});
}
}
if (!string.IsNullOrEmpty(continuationToken))
{
var modelNext = new BrowseNextRequestApiModel {
ContinuationToken = continuationToken
};
browseDataNext = await _twinService.NodeBrowseNextAsync(endpointId, modelNext);
references = browseDataNext.References;
continuationToken = browseDataNext.ContinuationToken;
}
else
{
browseDataNext.References = null;
}
} while (!string.IsNullOrEmpty(continuationToken) || browseDataNext.References != null);
}
catch (Exception e) {
// skip this node
Trace.TraceError("Can not browse node '{0}'", id);
var errorMessage = string.Concat(e.Message, e.InnerException?.Message ?? "--", e?.StackTrace ?? "--");
Trace.TraceError(errorMessage);
pageResult.Results.Add(new ListNode {
NodeName = e.Message,
DiscovererId = discovererId,
ParentName = "Root"
});
}
pageResult.PageSize = 10;
pageResult.RowCount = pageResult.Results.Count;
pageResult.PageCount = (int)Math.Ceiling((decimal)pageResult.RowCount / 10);
return(pageResult);
}
/// <summary>
/// Get tree
/// </summary>
/// <param name="endpointId"></param>
/// <param name="id"></param>
/// <param name="parentId"></param>
/// <param name="discovererId"></param>
/// <param name="direction"></param>
/// <returns>ListNode</returns>
public async Task <PagedResult <ListNode> > GetTreeAsync(string endpointId, string id,
List <string> parentId, string discovererId, BrowseDirection direction, int index,
CredentialModel credential = null)
{
var pageResult = new PagedResult <ListNode>();
var model = new BrowseRequestApiModel {
TargetNodesOnly = true,
ReadVariableValues = true
};
if (direction == BrowseDirection.Forward)
{
model.MaxReferencesToReturn = _MAX_REFERENCES;
model.NodeId = id;
if (id == string.Empty)
{
Path = new List <string>();
}
}
else
{
model.NodeId = parentId.ElementAt(index - 1);
}
model.Header = Elevate(new RequestHeaderApiModel(), credential);
try {
var browseData = await _twinService.NodeBrowseAsync(endpointId, model);
var continuationToken = browseData.ContinuationToken;
var references = browseData.References;
var browseDataNext = new BrowseNextResponseApiModel();
if (direction == BrowseDirection.Forward)
{
parentId.Add(browseData.Node.NodeId);
Path.Add(browseData.Node.DisplayName);
}
else
{
parentId.RemoveAt(parentId.Count - 1);
Path.RemoveRange(index, Path.Count - index);
}
do
{
if (references != null)
{
foreach (var nodeReference in references)
{
pageResult.Results.Add(new ListNode {
Id = nodeReference.Target.NodeId.ToString(),
NodeClass = nodeReference.Target.NodeClass ?? 0,
NodeName = nodeReference.Target.DisplayName.ToString(),
Children = (bool)nodeReference.Target.Children,
ParentIdList = parentId,
DiscovererId = discovererId,
AccessLevel = nodeReference.Target.AccessLevel ?? 0,
ParentName = browseData.Node.DisplayName,
DataType = nodeReference.Target.DataType,
Value = nodeReference.Target.Value?.ToString(),
Publishing = false,
PublishedItem = null
});
}
}
if (!string.IsNullOrEmpty(continuationToken))
{
bool?abort = null;
if (pageResult.Results.Count > 5)
{
// TODO: !!! Implement real paging - need to make ux responsive for large # tags !!!
abort = true;
}
var modelNext = new BrowseNextRequestApiModel {
ContinuationToken = continuationToken,
Abort = abort
};
browseDataNext = await _twinService.NodeBrowseNextAsync(endpointId, modelNext);
if (abort == true)
{
break;
}
references = browseDataNext.References;
continuationToken = browseDataNext.ContinuationToken;
}
else
{
browseDataNext.References = null;
}
} while (!string.IsNullOrEmpty(continuationToken) || browseDataNext.References != null);
}
catch (Exception e) {
// skip this node
_logger.Error($"Can not browse node '{id}'");
var errorMessage = string.Concat(e.Message, e.InnerException?.Message ?? "--", e?.StackTrace ?? "--");
_logger.Error(errorMessage);
string error = JToken.Parse(e.Message).ToString(Formatting.Indented);
if (error.Contains(StatusCodes.Status401Unauthorized.ToString()))
{
pageResult.Error = "Unauthorized access: Bad User Access Denied.";
}
else
{
pageResult.Error = error;
}
}
pageResult.PageSize = 10;
pageResult.RowCount = pageResult.Results.Count;
pageResult.PageCount = (int)Math.Ceiling((decimal)pageResult.RowCount / 10);
return(pageResult);
}
/// <summary>
/// Change current browse position.
/// </summary>
/// <param name="direction">The direction to browse OPC Server namespace. See <see cref="BrowseDirection"/>.</param>
/// <param name="filter">Mask of item/folder name.</param>
public void ChangeBrowsePosition(BrowseDirection direction, string filter)
{
_browseServerSpace.ChangeBrowsePosition(direction, filter);
}
/// <summary>
/// Called to create the browser for the item configuration.
/// </summary>
private NodeBrowser OnCreateItemConfigurationBrowser(
ISystemContext context,
NodeState node,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly)
{
HdaParsedNodeId nodeId = HdaParsedNodeId.Parse(node.NodeId);
if (nodeId == null)
{
return null;
}
return new HdaElementBrower(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly,
nodeId.RootId,
Opc.Ua.ObjectTypeIds.HistoricalDataConfigurationType,
Opc.Ua.BrowseNames.HAConfiguration,
NamespaceIndex);
}
/// <summary>
/// Returns true is the target meets the filter criteria.
/// </summary>
private bool ApplyBrowseFilters(
IReference reference,
BrowseDirection browseDirection,
NodeId referenceTypeId,
bool includeSubtypes)
{
// check browse direction.
if (reference.IsInverse)
{
if (browseDirection == BrowseDirection.Forward)
{
return false;
}
}
else
{
if (browseDirection == BrowseDirection.Inverse)
{
return false;
}
}
// check reference type filter.
if (!NodeId.IsNull(referenceTypeId))
{
if (reference.ReferenceTypeId != referenceTypeId)
{
if (includeSubtypes)
{
if (m_server.TypeTree.IsTypeOf(reference.ReferenceTypeId, referenceTypeId))
{
return true;
}
}
return false;
}
}
// include reference for now.
return true;
}
/// <summary>
/// Get tree
/// </summary>
/// <param name="endpointId"></param>
/// <param name="id"></param>
/// <param name="parentId"></param>
/// <param name="discovererId"></param>
/// <param name="direction"></param>
/// <param name="index"></param>
/// <param name="credential"></param>
/// <returns>ListNode</returns>
public async Task <PagedResult <ListNode> > GetTreeAsync(string endpointId, string id,
List <string> parentId, string discovererId, BrowseDirection direction, int index,
CredentialModel credential = null)
{
var pageResult = new PagedResult <ListNode>();
var header = Elevate(new RequestHeaderApiModel(), credential);
var previousPage = new PagedResult <ListNode>();
var model = new BrowseRequestApiModel {
TargetNodesOnly = true,
ReadVariableValues = true,
MaxReferencesToReturn = _MAX_REFERENCES
};
if (direction == BrowseDirection.Forward)
{
model.NodeId = id;
if (id == string.Empty)
{
Path = new List <string>();
}
}
else
{
model.NodeId = parentId.ElementAt(index - 1);
}
model.Header = header;
try {
var browseData = await _twinService.NodeBrowseAsync(endpointId, model);
_displayName = browseData.Node.DisplayName;
if (direction == BrowseDirection.Forward)
{
parentId.Add(browseData.Node.NodeId);
Path.Add(browseData.Node.DisplayName);
}
else
{
parentId.RemoveAt(parentId.Count - 1);
Path.RemoveRange(index, Path.Count - index);
}
if (!string.IsNullOrEmpty(browseData.ContinuationToken))
{
pageResult.PageCount = 2;
}
if (browseData.References != null)
{
foreach (var nodeReference in browseData.References)
{
previousPage.Results.Add(new ListNode {
Id = nodeReference.Target.NodeId.ToString(),
NodeClass = nodeReference.Target.NodeClass ?? 0,
NodeName = nodeReference.Target.DisplayName.ToString(),
Children = (bool)nodeReference.Target.Children,
ParentIdList = parentId,
DiscovererId = discovererId,
AccessLevel = nodeReference.Target.AccessLevel ?? 0,
ParentName = _displayName,
DataType = nodeReference.Target.DataType,
Value = nodeReference.Target.Value?.ToJson()?.TrimQuotes(),
Publishing = false,
PublishedItem = null
});
}
}
pageResult.Results = previousPage.Results;
pageResult.ContinuationToken = browseData.ContinuationToken;
pageResult.PageSize = _commonHelper.PageLength;
pageResult.RowCount = pageResult.Results.Count;
}
catch (UnauthorizedAccessException) {
pageResult.Error = "Unauthorized access: Bad User Access Denied.";
}
catch (Exception e) {
// skip this node
_logger.Error(e, "Can not browse node '{id}'", id);
var errorMessage = string.Concat(e.Message, e.InnerException?.Message ?? "--", e?.StackTrace ?? "--");
pageResult.Error = errorMessage;
}
return(pageResult);
}
/// <summary>
/// Change current browse position.
/// </summary>
/// <param name="direction">The direction to browse OPC Server namespace. See <see cref="BrowseDirection"/>.</param>
/// <param name="filter">Mask of item/folder name.</param>
public void ChangeBrowsePosition(BrowseDirection direction, string filter)
{
browseServerSpace.ChangeBrowsePosition(direction, filter);
}
/// <summary>
/// Creates a browser that finds the references to the branch.
/// </summary>
/// <param name="context">The system context to use.</param>
/// <param name="view">The view which may restrict the set of references/nodes found.</param>
/// <param name="referenceType">The type of references being followed.</param>
/// <param name="includeSubtypes">Whether subtypes of the reference type are followed.</param>
/// <param name="browseDirection">Which way the references are being followed.</param>
/// <param name="browseName">The browse name of a specific target (used when translating browse paths).</param>
/// <param name="additionalReferences">Any additional references that should be included.</param>
/// <param name="internalOnly">If true the browser should not making blocking calls to external systems.</param>
/// <returns>The browse object (must be disposed).</returns>
public override INodeBrowser CreateBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly)
{
NodeBrowser browser = new DaElementBrowser(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly,
this.ItemId,
this.NodeId.NamespaceIndex);
PopulateBrowser(context, browser);
return browser;
}
/// <summary>
/// Adds the targets of references to the control.
/// </summary>
private void AddReferences(NodeId referenceTypeId, BrowseDirection browseDirection)
{
// fetch the attributes for the reference type.
INode referenceType = m_session.NodeCache.Find(referenceTypeId);
if (referenceType == null)
{
return;
}
// browse for the references.
Browser browser = new Browser(m_session);
browser.BrowseDirection = browseDirection;
browser.ReferenceTypeId = referenceTypeId;
browser.IncludeSubtypes = true;
browser.NodeClassMask = 0;
browser.ContinueUntilDone = true;
ReferenceDescriptionCollection references = browser.Browse(m_nodeId);
// add results to list.
foreach (ReferenceDescription reference in references)
{
NodeField field = new NodeField();
field.Name = referenceType.ToString();
field.Value = reference.ToString();
field.StatusCode = StatusCodes.Good;
AddItem(field, "ReferenceType", -1);
}
}
/// <summary>
/// Used to receive notifications when a node browser is created.
/// </summary>
public NodeBrowser OnCreateBrowser(
ISystemContext context,
NodeState node,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly)
{
Browser browser = new Browser(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
null,
false,
GetClientSession(context as ServerSystemContext),
m_mapper,
Object.ReferenceEquals(node, m_root)?null:node,
m_root.NodeId);
return browser;
}
/// <summary>
/// Invokes the Browse service.
/// </summary>
/// <param name="requestHeader">The request header.</param>
/// <param name="view">The view to browse.</param>
/// <param name="nodeToBrowse">The node to browse.</param>
/// <param name="maxResultsToReturn">The maximum number of returned values.</param>
/// <param name="browseDirection">The browse direction.</param>
/// <param name="referenceTypeId">The reference type id.</param>
/// <param name="includeSubtypes">If set to <c>true</c> the subtypes of the ReferenceType will be included in the browse.</param>
/// <param name="nodeClassMask">The node class mask.</param>
/// <param name="continuationPoint">The continuation point.</param>
/// <param name="references">The list of node references.</param>
/// <returns></returns>
public virtual ResponseHeader Browse(
RequestHeader requestHeader,
ViewDescription view,
NodeId nodeToBrowse,
uint maxResultsToReturn,
BrowseDirection browseDirection,
NodeId referenceTypeId,
bool includeSubtypes,
uint nodeClassMask,
out byte[] continuationPoint,
out ReferenceDescriptionCollection references)
{
BrowseDescription description = new BrowseDescription();
description.NodeId = nodeToBrowse;
description.BrowseDirection = browseDirection;
description.ReferenceTypeId = referenceTypeId;
description.IncludeSubtypes = includeSubtypes;
description.NodeClassMask = nodeClassMask;
description.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(description);
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
ResponseHeader responseHeader = Browse(
requestHeader,
view,
maxResultsToReturn,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
if (StatusCode.IsBad(results[0].StatusCode))
{
throw new ServiceResultException(new ServiceResult(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable));
}
continuationPoint = results[0].ContinuationPoint;
references = results[0].References;
return responseHeader;
}
private void BrowseDirectionCTRL_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
m_browseDirection = (BrowseDirection)BrowseDirectionCTRL.SelectedItem;
if (NodesTV.SelectedNode != null)
{
NodesTV.SelectedNode.Collapse();
NodesTV.SelectedNode.Nodes.Clear();
NodesTV.SelectedNode.Nodes.Add(new TreeNode());
NodesTV.SelectedNode.Expand();
return;
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <summary>
/// Displays the a root in the control.
/// </summary>
public void Initialize(
Session session,
NodeId rootId,
NodeId viewId,
NodeId referenceTypeId,
BrowseDirection browseDirection)
{
m_session = session;
m_rootId = rootId;
m_viewId = viewId;
m_referenceTypeId = referenceTypeId;
m_browseDirection = browseDirection;
NodesTV.Nodes.Clear();
if (m_session == null)
{
return;
}
if (NodeId.IsNull(m_rootId))
{
m_rootId = Objects.RootFolder;
}
if (NodeId.IsNull(m_referenceTypeId))
{
m_referenceTypeId = ReferenceTypeIds.HierarchicalReferences;
}
ReferenceTypeCTRL.Initialize(m_session, ReferenceTypeIds.HierarchicalReferences);
ReferenceTypeCTRL.SelectedTypeId = m_referenceTypeId;
ILocalNode root = m_session.NodeCache.Find(m_rootId) as ILocalNode;
if (root == null)
{
return;
}
ReferenceDescription reference = new ReferenceDescription();
reference.ReferenceTypeId = referenceTypeId;
reference.IsForward = true;
reference.NodeId = root.NodeId;
reference.NodeClass = root.NodeClass;
reference.BrowseName = root.BrowseName;
reference.DisplayName = root.DisplayName;
reference.TypeDefinition = root.TypeDefinitionId;
TreeNode rootNode = new TreeNode(reference.ToString());
rootNode.ImageKey = rootNode.SelectedImageKey = GuiUtils.GetTargetIcon(session, reference);
rootNode.Tag = reference;
rootNode.Nodes.Add(new TreeNode());
NodesTV.Nodes.Add(rootNode);
}
/// <summary>
/// Begins an asynchronous invocation of the Browse service.
/// </summary>
/// <param name="requestHeader">The request header.</param>
/// <param name="view">The view to browse.</param>
/// <param name="nodeToBrowse">The node to browse.</param>
/// <param name="maxResultsToReturn">The maximum number of returned values..</param>
/// <param name="browseDirection">The browse direction.</param>
/// <param name="referenceTypeId">The reference type id.</param>
/// <param name="includeSubtypes">If set to <c>true</c> the subtypes of the ReferenceType will be included in the browse.</param>
/// <param name="nodeClassMask">The node class mask.</param>
/// <param name="callback">The callback.</param>
/// <param name="asyncState"></param>
/// <returns></returns>
public IAsyncResult BeginBrowse(
RequestHeader requestHeader,
ViewDescription view,
NodeId nodeToBrowse,
uint maxResultsToReturn,
BrowseDirection browseDirection,
NodeId referenceTypeId,
bool includeSubtypes,
uint nodeClassMask,
AsyncCallback callback,
object asyncState)
{
BrowseDescription description = new BrowseDescription();
description.NodeId = nodeToBrowse;
description.BrowseDirection = browseDirection;
description.ReferenceTypeId = referenceTypeId;
description.IncludeSubtypes = includeSubtypes;
description.NodeClassMask = nodeClassMask;
description.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(description);
return BeginBrowse(
requestHeader,
view,
maxResultsToReturn,
nodesToBrowse,
callback,
asyncState);
}
public override INodeBrowser CreateBrowser(
ISystemContext context,
ViewDescription view,
NodeId referenceType,
bool includeSubtypes,
BrowseDirection browseDirection,
QualifiedName browseName,
IEnumerable<IReference> additionalReferences,
bool internalOnly)
{
MemoryRegisterBrowser browser = new MemoryRegisterBrowser(
context,
view,
referenceType,
includeSubtypes,
browseDirection,
browseName,
additionalReferences,
internalOnly,
this);
return browser;
}
