public string CreateInstallingSnapshot(string path)
{
var installingPath = DependencySnapshotFolderNameTools.ConvertInstalledToInstalling(path);
Directory.CreateDirectory(installingPath);
return(installingPath);
}
public DateTime GetSnapshotAccessTimeUtc(string path)
{
var heartbeatFilePath = DependencySnapshotFolderNameTools.CreateLastAccessMarkerFilePath(path);
var heartbeatLastWrite = File.GetLastWriteTimeUtc(heartbeatFilePath);
var snapshotCreation = GetSnapshotCreationTimeUtc(path);
// If heartbeatLastWrite is older than snapshotCreation, this indicates that the heartbeat file
// does not exist (as in this case File.GetLastWriteTimeUtc returns January 1, 1601 A.D.).
// In this situation, we want to use the snapshot creation time as the closest approximation instead.
return(heartbeatLastWrite >= snapshotCreation ? heartbeatLastWrite : snapshotCreation);
}
public void SetSnapshotAccessTimeToUtcNow(string path)
{
var markerFilePath = DependencySnapshotFolderNameTools.CreateLastAccessMarkerFilePath(path);
if (File.Exists(markerFilePath))
{
File.SetLastWriteTimeUtc(markerFilePath, DateTime.UtcNow);
}
else
{
var file = File.Open(markerFilePath, FileMode.Create, FileAccess.Write, FileShare.ReadWrite | FileShare.Delete);
file.Dispose();
}
}
public void PromoteInstallingSnapshotToInstalledAtomically(string path)
{
var installingPath = DependencySnapshotFolderNameTools.ConvertInstalledToInstalling(path);
Directory.Move(installingPath, path);
}
public string CreateNewSnapshotPath()
{
return(Path.Join(
_managedDependenciesRootPath,
DependencySnapshotFolderNameTools.CreateUniqueName()));
}
