/// <summary>
/// Compacts the specified from buffer.
/// </summary>
/// <param name="fromBuffer">From buffer.</param>
/// <param name="indexs">The indexes.</param>
public static void Compact(ref InternalStorageBuffer fromBuffer, ref ConcurrentDictionary <string, BinaryStorageKey> indexs)
{
scrubBuffer.ResetBuffer();
foreach (var storageKey in indexs.Keys)
{
// Scrub out old data ;)
BinaryStorageKey tmpKey;
if (indexs.TryRemove(storageKey, out tmpKey))
{
long pos = tmpKey.Position;
int len = tmpKey.Length;
var bytes = fromBuffer.FetchFromBuffer(pos, len);
var idx = scrubBuffer.InsertSegment(bytes);
tmpKey.Position = idx;
indexs[storageKey] = tmpKey;
}
}
// now copy over the data ;)
fromBuffer.ResetBuffer();
scrubBuffer.TransferTo(ref fromBuffer);
}
public Dev2BinaryStorage(string filename, int bufCap)
{
if (!string.IsNullOrEmpty(filename))
{
lock (DirLock)
{
if (!Directory.Exists(DataListPersistPath))
{
Directory.CreateDirectory(DataListPersistPath);
}
if (!_startupCleaned)
{
foreach (FileInfo f in new DirectoryInfo(DataListPersistPath).GetFiles("*.data"))
{
try
{
f.Delete();
}
// ReSharper disable EmptyGeneralCatchClause
catch (Exception err)
// ReSharper restore EmptyGeneralCatchClause
{
Dev2Logger.Log.Debug("Delete error", err);
// Best effort ;)
}
}
_startupCleaned = true;
}
}
_completeFilename = Path.Combine(DataListPersistPath, filename);
}
_file = new FileStream(_completeFilename, FileMode.OpenOrCreate, FileAccess.ReadWrite);
_internalBuffer = new InternalStorageBuffer {
Buffer = new byte[bufCap], Capacity = bufCap, UsedStorage = 0
};
}
/// <summary>
/// Transfers one buffer to another. Used by the background scrubber ;)
/// </summary>
/// <param name="toBuffer">The automatic buffer.</param>
public void TransferTo(ref InternalStorageBuffer toBuffer)
{
System.Buffer.BlockCopy(Buffer, 0, toBuffer.Buffer, 0, UsedStorage);
toBuffer.UsedStorage = UsedStorage;
}
// ReSharper restore InconsistentNaming
public static void Init(int bufCap)
{
scrubBuffer = new InternalStorageBuffer {
Buffer = new byte[bufCap], Capacity = bufCap, UsedStorage = 0
};
}