// Currently used in TensorFlowTransform to protect temporary folders used when working with TensorFlow's SavedModel format.
// Models are considered executable code, so we need to ACL tthe temp folders for high-rights process (so low-rights process can’t access it).
/// <summary>
/// Given a folder path, create it with proper ACL if it doesn't exist.
/// Fails if the folder name is empty, or can't create the folder.
/// </summary>
internal static void CreateFolderWithAclIfNotExists(IHostEnvironment env, string folder)
{
Contracts.Check(env != null, nameof(env));
env.CheckNonWhiteSpace(folder, nameof(folder));
//if directory exists, do nothing.
if (Directory.Exists(folder))
{
return;
}
WindowsIdentity currentIdentity = null;
try
{
currentIdentity = WindowsIdentity.GetCurrent();
}
catch (PlatformNotSupportedException)
{ }
if (currentIdentity != null && new WindowsPrincipal(currentIdentity).IsInRole(WindowsBuiltInRole.Administrator))
{
// Create high integrity dir and set no delete policy for all files under the directory.
// In case of failure, throw exception.
CreateTempDirectoryWithAcl(folder, currentIdentity.User.ToString());
}
else
{
try
{
Directory.CreateDirectory(folder);
}
catch (Exception exc)
{
throw Contracts.ExceptParam(nameof(folder), $"Failed to create folder for the provided path: {folder}. \nException: {exc.Message}");
}
}
}
internal static IEvaluator CreateEvaluator(this IHostEnvironment env, string settings)
{
Contracts.CheckValue(env, nameof(env));
env.CheckNonWhiteSpace(settings, nameof(settings));
return(CreateCore <IEvaluator>(env, typeof(SignatureEvaluator), settings));
}
public BaseAverager(IHostEnvironment env, string name)
{
Contracts.CheckValue(env, nameof(env));
env.CheckNonWhiteSpace(name, nameof(name));
Host = env.Register(name);
}
private static byte[] CheckFileAndRead(IHostEnvironment env, string modelFile)
{
env.CheckNonWhiteSpace(modelFile, nameof(modelFile));
env.CheckUserArg(File.Exists(modelFile), nameof(modelFile));
return(File.ReadAllBytes(modelFile));
}
protected PredictorBase(IHostEnvironment env, string name)
{
Contracts.CheckValue(env, nameof(env));
env.CheckNonWhiteSpace(name, nameof(name));
Host = env.Register(name);
}
private protected ModelParametersBase(IHostEnvironment env, string name)
{
Contracts.CheckValue(env, nameof(env));
env.CheckNonWhiteSpace(name, nameof(name));
Host = env.Register(name);
}