/// <summary>
/// Creates a new controller file.
/// </summary>
private ServiceResult OnCreateController(
ISystemContext context,
MethodState method,
NodeId objectId,
string name,
ref NodeId nodeId)
{
nodeId = null;
// get the system to use.
FileSystemMonitor system = context.SystemHandle as FileSystemMonitor;
if (system == null)
{
return(StatusCodes.BadOutOfService);
}
// get the current dierctory.
DirectoryInfo directory = GetDirectory(context, this.NodeId);
if (directory == null || !directory.Exists)
{
return(StatusCodes.BadOutOfService);
}
// build the file path.
StringBuilder filePath = new StringBuilder();
filePath.Append(directory.FullName);
filePath.Append('\\');
filePath.Append(name);
filePath.Append(".csv");
if (File.Exists(filePath.ToString()))
{
return(StatusCodes.BadNodeIdExists);
}
// write a dummy configuration file.
try
{
using (StreamWriter writer = new StreamWriter(filePath.ToString()))
{
writer.WriteLine("Temperature, Double, 15");
writer.WriteLine("TemperatureSetPoint, Double, 15");
}
}
catch (Exception e)
{
return(new ServiceResult(e, StatusCodes.BadUnexpectedError));
}
// return the node id.
nodeId = system.CreateNodeIdFromFilePath(ObjectTypes.ControllerType, filePath.ToString());
return(ServiceResult.Good);
}
/// <summary>
/// Initializes a controller from a file.
/// </summary>
public ControllerState(ISystemContext context, FileInfo fileInfo) : base(null)
{
fileInfo.Refresh();
// extract the display name from the original file path.
string name = fileInfo.Name;
// need to read the correct casing from the file system.
if (fileInfo.Exists)
{
FileInfo[] files = fileInfo.Directory.GetFiles(name);
if (files != null && files.Length > 0)
{
name = files[0].Name;
}
}
int index = name.LastIndexOf('.');
if (index >= 0)
{
name = name.Substring(0, index);
}
// get the system to use.
FileSystemMonitor system = context.SystemHandle as FileSystemMonitor;
if (system != null)
{
this.NodeId = system.CreateNodeIdFromFilePath(ObjectTypes.ControllerType, fileInfo.FullName);
this.BrowseName = new QualifiedName(name, system.NamespaceIndex);
this.OnValidate = system.ValidateController;
}
this.DisplayName = new LocalizedText(name);
this.EventNotifier = EventNotifiers.None;
this.TypeDefinitionId = GetDefaultTypeDefinitionId(context.NamespaceUris);
}