private uint GetMaxResults(BrowseFilter browseFilter)
{
var max = browseFilter != null ? (uint)browseFilter.maxResults : uint.MaxValue;
if (max > 0)
{
return(max);
}
return(uint.MaxValue);
}
private CallResourceResponse Browse(CallResourceRequest request, Session connection, NameValueCollection queryParams, NamespaceTable nsTable)
{
CallResourceResponse response = new CallResourceResponse();
string nodeId = HttpUtility.UrlDecode(queryParams["nodeId"]);
var mask = queryParams["nodeClassMask"];
string filter = queryParams["browseFilter"];
BrowseFilter browseFilter = null;
if (!string.IsNullOrEmpty(filter))
{
browseFilter = JsonSerializer.Deserialize <BrowseFilter>(filter);
}
var hasMask = !string.IsNullOrWhiteSpace(mask);
uint nodeClassMask = 0;
if (hasMask)
{
if (!uint.TryParse(mask, out nodeClassMask))
{
hasMask = false;
}
}
var nId = Converter.GetNodeId(nodeId, nsTable);
IEnumerable <ReferenceDescription> browseResult = connection.Browse(nId, hasMask ? nodeClassMask : (int)(NodeClass.Object | NodeClass.Variable), GetMaxResults(browseFilter));
if (!string.IsNullOrEmpty(browseFilter?.browseName))
{
browseResult = browseResult.Where(a => a.BrowseName.Name.Contains(browseFilter.browseName));
}
var result = JsonSerializer.Serialize(browseResult.Select(a => Converter.ConvertToBrowseResult(a, nsTable)).OrderBy(refdesc => refdesc.displayName).ToArray());
response.Code = 200;
response.Body = ByteString.CopyFrom(result, Encoding.ASCII);
_log.LogDebug("We got a result from browse => {0}", result);
return(response);
}