private static StorageReport AnalyzeStorage(string dir)
{
var fullPath = Path.Combine(dir, ReliableStorage.StorageFileName);
using var storage = new FileStream(fullPath, FileMode.Open);
storage.Seek(0, SeekOrigin.Begin);
var block = new PersistentBlock();
var reader = new BinaryReader(storage);
var storageReport = new StorageReport();
// read all the blocks
while (block.Read(reader, true))
{
storageReport.TotalBlocks++;
if (!IsValidBlock(block))
{
storageReport.BlocksWithIssues.Add(block);
storageReport.InvalidBlocks++;
}
if (block.BlockStatus == BlockStatus.Active)
{
storageReport.ActiveBlocks++;
}
if (block.BlockStatus == BlockStatus.Deleted)
{
storageReport.DeletedBlocks++;
}
if (block.BlockStatus == BlockStatus.Dirty)
{
storageReport.DirtyBlocks++;
}
if (!IsValidBlock(block))
{
FindNextBeginMarker(storage.Position + PersistentBlock.MinSize, storage);
}
// get the most recent transaction committed to this storage
if (block.LastTransactionId > storageReport.LastTransactionId)
{
storageReport.LastTransactionId = block.LastTransactionId;
}
storageReport.LastPrimaryKey = block.PrimaryKey;
block = new PersistentBlock();
}
storageReport.Size = storage.Position;
return(storageReport);
}
public void Size_of_smallest_dirty_block()
{
var block = PersistentBlock.MakeDirtyBlock(35);
MemoryStream stream = new MemoryStream();
var w = new BinaryWriter(stream);
block.Write(w);
Console.WriteLine("min size is " + stream.Position);
Assert.AreEqual(35, stream.Position, "smallest block size changed (was 35). Code must be updated: PersistentBlock.MinSize constant ");
}
static bool IsValidBlock(PersistentBlock block)
{
if (block.BeginMarker != PersistentBlock.BeginMarkerValue)
{
return(false);
}
if (block.EndMarker != PersistentBlock.EndMarkerValue)
{
return(false);
}
return(block.HashOk);
}
