private static void CloneDatabase(Memfs memfs, string source, string target)
{
Console.WriteLine("Clone database; from '{0}' into '{1}'...", source, target);
using (var iStream = memfs.GetStream(source))
using (var oStream = memfs.GetStream(target))
iStream.CopyTo(oStream);
}
private static void CheckStreamReadWrite(Memfs memfs, string fileName, string memfsName, int bufferSize)
{
using (var fileStream = System.IO.File.OpenRead(fileName))
using (var memfsStream = memfs.GetStream(memfsName))
{
//memfsStream.SetLength(fileStream.Length);
int amount = 0;
var buffer = new byte[bufferSize];
while ((amount = fileStream.Read(buffer, 0, buffer.Length)) > 0)
{
memfsStream.Write(buffer, 0, amount);
}
if (fileStream.Position != memfsStream.Position)
{
Console.WriteLine("finished at different positions");
}
if (fileStream.Length != memfsStream.Length)
{
Console.WriteLine("different file lengths");
}
}
using (var fileStream = System.IO.File.OpenRead(fileName))
using (var memfsStream = memfs.GetStream(memfsName))
{
int total = 0, amount = 0;
var buffer = new byte[bufferSize];
var data = new byte[buffer.Length];
while ((amount = fileStream.Read(buffer, 0, buffer.Length)) > 0)
{
var len = memfsStream.Read(data, 0, amount);
if (len != amount)
{
Console.WriteLine("did not read correct amount");
}
if (fileStream.Position != memfsStream.Position)
{
Console.WriteLine("streams at different positions");
}
//Console.WriteLine("file: {0}; memfs: {1}", fileStream.Position, memfsStream.Position);
for (int i = 0; i < Math.Min(len, amount); ++i)
{
if (buffer[i] != data[i])
{
Console.WriteLine("mismatch at position {0}", total + i);
}
}
total += len;
if (amount != len)
{
fileStream.Seek(total, System.IO.SeekOrigin.Begin);
}
}
Console.WriteLine("compare finished");
}
}
static void Main(string[] args)
{
try
{
using (var memfs = new Memfs())
{
CheckStreamReadWrite(memfs, "C:\\temp\\test.bin", "X:\\test.bin", 6000);
}
var guid = Guid.NewGuid();
using (var memfs = new Memfs())
{
CreateDatabase("X:\\db1");
CloneDatabase(memfs, "X:\\db1", "X:\\db2");
InsertData("X:\\db2", guid);
CloneDatabase(memfs, "X:\\db2", "X:\\db3");
ParallelUpdate(guid, "X:\\db1", "X:\\db2");
ParallelUpdate(guid, "X:\\db3", "X:\\db3");
ReadData("X:\\db3");
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
if (System.Diagnostics.Debugger.IsAttached)
{
Console.Write("Press any key to continue . . . ");
Console.ReadKey(true); Console.WriteLine();
}
}
