public static async Task<ObjectWriteResult> CreateTempFile(ObjectType type, int length, byte[] data, string rootPath)
{
var name = Path.Combine(rootPath, "tmp" + _random.Next(0, int.MaxValue));
using (var file = File.OpenWrite(name))
using (var stream = CompressionStream.CompressStream(file))
using (var md = new MessageDigest())
{
var header = Encoding.ASCII.GetBytes(string.Format("{0} {1}\0", type.ToTypeCode(), length));
await stream.WriteAsync(header, 0, header.Length);
await stream.WriteAsync(data, 0, data.Length);
md.Update(header);
md.Update(data);
var digest = md.Digest();
return new ObjectWriteResult
{
FileInfo = new FileInfo(name),
ObjectId = Helper.ByteArrayToId(digest)
};
}
}
