public void TestTwoBlocks()
{
using (var xMemStream = new MemoryStream())
{
xMemStream.SetLength(2048);
// 4 blocks of 512 bytes
using (var xRawBlockStore = new SimpleStreamBlockStore(xMemStream, 512))
{
ODBFSImpl.Format(xRawBlockStore, 512);
using (var xOdbfs = new ODBFSImpl(xRawBlockStore))
{
Assert.AreEqual(0, xOdbfs.GetVirtualBlocks().Count());
var xBlock1Id = Guid.NewGuid();
var xBlock2Id = Guid.NewGuid();
xOdbfs.CreateNewBlock(xBlock1Id, 1);
xOdbfs.CreateNewBlock(xBlock2Id, 1);
var xBuff1 = new byte[512];
var xBuff1Seg = new ArraySegment<byte>(xBuff1);
var xBuff2 = new byte[512];
var xBuff2Seg = new ArraySegment<byte>(xBuff2);
using (var xBlock1 = xOdbfs.OpenBlock(xBlock1Id))
{
for (int i = 0; i < xBuff1.Length; i++)
{
xBuff1[i] = 0xAA;
}
xBlock1.Store(0, xBuff1Seg);
}
using (var xBlock2 = xOdbfs.OpenBlock(xBlock2Id))
{
for (int i = 0; i < xBuff1.Length; i++)
{
xBuff1[i] = 0xBB;
}
xBlock2.Store(0, xBuff1Seg);
}
for (int i = 0; i < xBuff1.Length; i++)
{
xBuff1[i] = 0xAA;
}
xRawBlockStore.Retrieve(1, xBuff2Seg);
Assert.IsTrue(DeduplicatingBlockStore.CompareBlocks(xBuff1, xBuff2, 0, 0, 512));
for (int i = 0; i < xBuff1.Length; i++)
{
xBuff1[i] = 0xBB;
}
xRawBlockStore.Retrieve(2, xBuff2Seg);
Assert.IsTrue(DeduplicatingBlockStore.CompareBlocks(xBuff1, xBuff2, 0, 0, 512));
xBuff1 = new byte[512];
xRawBlockStore.Retrieve(3, xBuff2Seg);
Assert.IsTrue(DeduplicatingBlockStore.CompareBlocks(xBuff1, xBuff2, 0, 0, 512));
}
}
}
}
public VBlockContentStore(ODBFSImpl odbfs, Guid identifier)
{
if (odbfs == null)
{
throw new ArgumentNullException("odbfs");
}
_odbfs = odbfs;
_identifier = identifier;
using(_odbfs._openBlocksLock.EnterWriteLock())
{
List<VBlockContentStore> xOpenBlocks;
if(!_odbfs._openBlocks.TryGetValue(identifier, out xOpenBlocks))
{
throw new Exception("Block not found!");
}
xOpenBlocks.Add(this);
}
}