/// <summary>
/// Rename the pack to it's final name and location and open it.
/// <para/>
/// If the call completes successfully the repository this IndexPack instance
/// was created with will have the objects in the pack available for reading
/// and use, without needing to scan for packs.
/// </summary>
/// <param name="lockMessage">
/// message to place in the pack-*.keep file. If null, no lock
/// will be created, and this method returns null.
/// </param>
/// <returns>the pack lock object, if lockMessage is not null.</returns>
public PackLock renameAndOpenPack(string lockMessage)
{
if (!_keepEmpty && _entryCount == 0)
{
CleanupTemporaryFiles();
return(null);
}
MessageDigest d = Constants.newMessageDigest();
var oeBytes = new byte[Constants.OBJECT_ID_LENGTH];
for (int i = 0; i < _entryCount; i++)
{
PackedObjectInfo oe = _entries[i];
oe.copyRawTo(oeBytes, 0);
d.Update(oeBytes);
}
string name = ObjectId.FromRaw(d.Digest()).Name;
var packDir = PathUtil.CombineDirectoryPath(_repo.ObjectsDirectory, "pack");
var finalPack = PathUtil.CombineFilePath(packDir, "pack-" + GetPackFileName(name));
var finalIdx = PathUtil.CombineFilePath(packDir, "pack-" + GetIndexFileName(name));
var keep = new PackLock(finalPack);
if (!packDir.Exists && !packDir.Mkdirs() && !packDir.Exists)
{
// The objects/pack directory isn't present, and we are unable
// to create it. There is no way to move this pack in.
//
CleanupTemporaryFiles();
throw new IOException("Cannot Create " + packDir);
}
if (finalPack.Exists)
{
// If the pack is already present we should never replace it.
//
CleanupTemporaryFiles();
return(null);
}
if (lockMessage != null)
{
// If we have a reason to create a keep file for this pack, do
// so, or fail fast and don't put the pack in place.
//
try
{
if (!keep.Lock(lockMessage))
{
throw new IOException("Cannot lock pack in " + finalPack);
}
}
catch (IOException)
{
CleanupTemporaryFiles();
throw;
}
}
if (!_dstPack.RenameTo(finalPack.ToString()))
{
CleanupTemporaryFiles();
keep.Unlock();
throw new IOException("Cannot move pack to " + finalPack);
}
if (!_dstIdx.RenameTo(finalIdx.ToString()))
{
CleanupTemporaryFiles();
keep.Unlock();
finalPack.DeleteFile();
//if (finalPack.Exists)
// TODO: [caytchen] finalPack.deleteOnExit();
throw new IOException("Cannot move index to " + finalIdx);
}
try
{
_repo.OpenPack(finalPack, finalIdx);
}
catch (IOException)
{
keep.Unlock();
finalPack.DeleteFile();
finalIdx.DeleteFile();
throw;
}
return(lockMessage != null ? keep : null);
}
public PackLock renameAndOpenPack(string lockMessage)
{
if (!_keepEmpty && _entryCount == 0)
{
CleanupTemporaryFiles();
return(null);
}
MessageDigest d = Constants.newMessageDigest();
var oeBytes = new byte[Constants.OBJECT_ID_LENGTH];
for (int i = 0; i < _entryCount; i++)
{
PackedObjectInfo oe = _entries[i];
oe.copyRawTo(oeBytes, 0);
d.Update(oeBytes);
}
string name = ObjectId.FromRaw(d.Digest()).Name;
var packDir = new DirectoryInfo(Path.Combine(_repo.ObjectsDirectory.ToString(), "pack"));
var finalPack = new FileInfo(Path.Combine(packDir.ToString(), "pack-" + GetPackFileName(name)));
var finalIdx = new FileInfo(Path.Combine(packDir.ToString(), "pack-" + GetIndexFileName(name)));
var keep = new PackLock(finalPack);
if (!packDir.Exists && !packDir.Mkdirs() && !packDir.Exists)
{
CleanupTemporaryFiles();
throw new IOException("Cannot Create " + packDir);
}
if (finalPack.Exists)
{
CleanupTemporaryFiles();
return(null);
}
if (lockMessage != null)
{
try
{
if (!keep.Lock(lockMessage))
{
throw new IOException("Cannot lock pack in " + finalPack);
}
}
catch (IOException)
{
CleanupTemporaryFiles();
throw;
}
}
if (!_dstPack.RenameTo(finalPack.ToString()))
{
CleanupTemporaryFiles();
keep.Unlock();
throw new IOException("Cannot move pack to " + finalPack);
}
if (!_dstIdx.RenameTo(finalIdx.ToString()))
{
CleanupTemporaryFiles();
keep.Unlock();
finalPack.Delete();
//if (finalPack.Exists)
// TODO: [caytchen] finalPack.deleteOnExit();
throw new IOException("Cannot move index to " + finalIdx);
}
try
{
_repo.OpenPack(finalPack, finalIdx);
}
catch (IOException)
{
keep.Unlock();
finalPack.Delete();
finalIdx.Delete();
throw;
}
return(lockMessage != null ? keep : null);
}
