private bool UpdateInCache(Uri uri, string withFile)
{
using (var progressHandler = EmulationManager.Instance.ProgressMonitor.Start("Updating cache"))
{
lock (CacheDirectory)
{
var index = ReadBinariesIndex();
BinaryEntry entry;
var fileId = 0;
if (!index.TryGetValue(uri, out entry))
{
foreach (var element in index)
{
fileId = Math.Max(fileId, element.Value.Index) + 1;
}
}
else
{
fileId = entry.Index;
}
FileCopier.Copy(withFile, GetBinaryFileName(fileId), true);
long size;
var checksum = GetChecksumAndSizeFromUri(uri, out size);
entry = new BinaryEntry(fileId, size, checksum);
if (!Verify(withFile, entry))
{
return(false);
}
index[uri] = entry;
WriteBinariesIndex(index);
return(true);
}
}
}
public void Load(FileStream stream)
{
using (var reader = new PrimitiveReader(stream, false))
{
foreach (var provider in providers)
{
var tempFile = TemporaryFilesManager.Instance.GetTemporaryFile();
if (ConfigurationManager.Instance.Get("file-system", "use-cow", false))
{
FileCopier.Copy(stream.Name, tempFile, true);
var size = reader.ReadInt64();
var localPosition = stream.Position;
reader.ReadBytes((int)size);
provider.BlobIsReady(tempFile, localPosition, size);
}
else
{
var size = reader.ReadInt64();
using (var fileStream = new FileStream(tempFile, FileMode.OpenOrCreate))
{
reader.CopyTo(fileStream, size);
}
provider.BlobIsReady(tempFile, 0, size);
}
}
}
}
private bool TryGetFromCache(Uri uri, out string fileName)
{
lock (CacheDirectory)
{
fileName = null;
var index = ReadBinariesIndex();
BinaryEntry entry;
if (!index.TryGetValue(uri, out entry))
{
return(false);
}
var fileToCopy = GetBinaryFileName(entry.Index);
if (!Verify(fileToCopy, entry))
{
return(false);
}
fileName = TemporaryFilesManager.Instance.GetTemporaryFile();
FileCopier.Copy(GetBinaryFileName(entry.Index), fileName, true);
return(true);
}
}