public NameServer()
{
sr = new serialization();
try
{
fileTree = sr.deserialize();
}
catch (Exception e)
{
Console.WriteLine("Can't deserialize file tree!");
Console.WriteLine(e.Message);
throw new Exception("Can't deserialize!");
}
try
{
listOfFileServers = sr.readFileServersList();
}
catch (Exception e)
{
Console.WriteLine("Can't read file servers list!");
Console.WriteLine(e.Message);
throw new Exception("Can't read list of file servers!");
}
}
public FileTree deserialize()
{
FileTree fileTree;
FileStream fs;
BinaryFormatter bf = new BinaryFormatter();
if (File.Exists("D:\\nameServer\\fileTree.dat"))
{
try
{
fs = new FileStream("D:\\nameServer\\fileTree.dat", FileMode.Open);
}
catch (Exception e)
{
Console.WriteLine("Can't open existing file with file system tree!");
Console.WriteLine(e.Message);
return null;
}
fileTree = (FileTree)bf.Deserialize(fs);
fs.Close();
}
else
{
try
{
fs = new FileStream("D:\\nameServer\\fileTree.dat", FileMode.Create);
}
catch (Exception e)
{
Console.WriteLine("Can't create file with file system tree!");
Console.WriteLine(e.Message);
return null;
}
fileTree = new FileTree();
bf.Serialize(fs, fileTree);
fs.Close();
}
return fileTree;
}
public bool serialize(FileTree tree)
{
try
{
FileStream fs = new FileStream("D:\\nameServer\\fileTree.dat", FileMode.Create);
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(fs, tree);
fs.Close();
return true;
}
catch (Exception e)
{
Console.WriteLine("Can't serialize file!");
Console.WriteLine(e.Message);
return false;
}
}