/// <summary>
/// Ensure the prefetch pack with most-recent timestamp has an associated
/// ".keep" file. This prevents any Git command from deleting the pack.
///
/// Delete the previous ".keep" file(s) so that pack can be deleted when they
/// are not the most-recent pack.
/// </summary>
private void UpdateKeepPacks()
{
if (!this.TryGetMaxGoodPrefetchTimestamp(out long maxGoodTimeStamp, out string error))
{
return;
}
string prefix = $"prefetch-{maxGoodTimeStamp}-";
DirectoryItemInfo info = this.Context
.FileSystem
.ItemsInDirectory(this.Context.Enlistment.GitPackRoot)
.Where(item => item.Name.StartsWith(prefix) &&
string.Equals(Path.GetExtension(item.Name), ".pack", StringComparison.OrdinalIgnoreCase))
.FirstOrDefault();
if (info == null)
{
this.Context.Tracer.RelatedWarning(this.CreateEventMetadata(), $"Could not find latest prefetch pack, starting with {prefix}");
return;
}
string newKeepFile = Path.ChangeExtension(info.FullName, ".keep");
if (!this.Context.FileSystem.TryWriteAllText(newKeepFile, string.Empty))
{
this.Context.Tracer.RelatedWarning(this.CreateEventMetadata(), $"Failed to create .keep file at {newKeepFile}");
return;
}
foreach (string keepFile in this.Context
.FileSystem
.ItemsInDirectory(this.Context.Enlistment.GitPackRoot)
.Where(item => item.Name.EndsWith(".keep"))
.Select(item => item.FullName))
{
if (!keepFile.Equals(newKeepFile))
{
this.Context.FileSystem.TryDeleteFile(keepFile);
}
}
}
//public virtual bool TryCreateDirectoryWithAdminAndUserModifyPermissions(string directoryPath, out string error)
//{
// return ScalarPlatform.Instance.FileSystem.TryCreateDirectoryWithAdminAndUserModifyPermissions(directoryPath, out error);
//}
//public virtual bool TryCreateOrUpdateDirectoryToAdminModifyPermissions( string directoryPath, out string error)
//{
// return ScalarPlatform.Instance.FileSystem.TryCreateOrUpdateDirectoryToAdminModifyPermissions( directoryPath, out error);
//}
public virtual IEnumerable <DirectoryItemInfo> ItemsInDirectory(string path)
{
DirectoryInfo ntfsDirectory = new DirectoryInfo(path);
foreach (FileSystemInfo ntfsItem in ntfsDirectory.GetFileSystemInfos())
{
DirectoryItemInfo itemInfo = new DirectoryItemInfo()
{
FullName = ntfsItem.FullName,
Name = ntfsItem.Name,
IsDirectory = (ntfsItem.Attributes & FileAttributes.Directory) != 0
};
if (!itemInfo.IsDirectory)
{
itemInfo.Length = ((FileInfo)ntfsItem).Length;
}
yield return(itemInfo);
}
}