public Builder(Tag imm)
{
this.Name = imm.Name;
this.CommitID = imm.CommitID;
this.Tagger = imm.Tagger;
this.DateTagged = imm.DateTagged;
this.Message = imm.Message;
}
public async Task<Errorable<Tag>> PersistTag(Tag tg)
{
await persistTag(tg).ConfigureAwait(continueOnCapturedContext: false);
return tg;
}
private async Task<Errorable<Tag>> persistTag(Tag tg)
{
// Write the commit contents to the file:
FileInfo tmpFile = system.getTemporaryFile();
using (var fs = new FileStream(tmpFile.FullName, FileMode.CreateNew, FileAccess.Write, FileShare.None))
{
await fs.WriteRawAsync(tg.WriteTo(new StringBuilder()).ToString());
}
lock (FileSystem.SystemLock)
{
FileInfo fi = system.getPathByID(tg.ID);
// NOTE: if the record already exists we can either error out or overwrite the existing file with contents known to be good in the case the existing file got corrupt.
// Let's stick with the self-repair scenario since erroring out doesn't help anyone.
if (fi.Exists)
{
Debug.WriteLine(String.Format("Self-repair scenario: overwriting old TagID {0} with new contents", tg.ID));
fi.Delete();
}
// Create directory if it doesn't exist:
if (!fi.Directory.Exists)
{
Debug.WriteLine(String.Format("New DIR '{0}'", fi.Directory.FullName));
fi.Directory.Create();
}
Debug.WriteLine(String.Format("New TAG '{0}'", fi.FullName));
File.Move(tmpFile.FullName, fi.FullName);
}
// Now keep track of the tag by its name:
tmpFile = system.getTemporaryFile();
using (var fs = new FileStream(tmpFile.FullName, FileMode.CreateNew, FileAccess.Write, FileShare.None))
{
await fs.WriteRawAsync(tg.ID.ToString());
}
lock (FileSystem.SystemLock)
{
FileInfo fiTracker = system.getTagPathByTagName(tg.Name);
// Does this tag name exist already?
if (fiTracker.Exists)
{
tmpFile.Delete();
return new TagNameAlreadyExistsError(tg.Name);
}
// Create directory if it doesn't exist:
if (!fiTracker.Directory.Exists)
{
Debug.WriteLine(String.Format("New DIR '{0}'", fiTracker.Directory.FullName));
fiTracker.Directory.Create();
}
Debug.WriteLine(String.Format("New TAG '{0}'", fiTracker.FullName));
File.Move(tmpFile.FullName, fiTracker.FullName);
}
return tg;
}
private void deleteTag(Tag tg)
{
FileInfo fi = system.getPathByID(tg.ID);
lock (FileSystem.SystemLock)
{
if (fi.Exists) fi.Delete();
}
FileInfo fiTracker = system.getTagPathByTagName(tg.Name);
lock (FileSystem.SystemLock)
{
if (fiTracker.Exists) fiTracker.Delete();
}
}