/// <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);
}