bool DoSave()
{
if (IsReadOnly)
{
SetStatus("Cannot save read-only");
return(false);
}
string DocText = Doc.Text;
{
try
{
string fn = PrettyFile;
if (fn.StartsWith("dfs://", StringComparison.OrdinalIgnoreCase))
{
fn = fn.Substring(6);
}
dfs dc = Surrogate.ReadMasterDfsConfig();
string[] slaves = dc.Slaves.SlaveList.Split(';');
if (0 == slaves.Length || dc.Slaves.SlaveList.Length == 0)
{
throw new Exception("DFS SlaveList error (machines)");
}
Random rnd = new Random(DateTime.Now.Millisecond / 2 + System.Diagnostics.Process.GetCurrentProcess().Id / 2);
string newactualfilehost = slaves[rnd.Next() % slaves.Length];
string newactualfilename = dfs.GenerateZdFileDataNodeName(fn);
string myActualFile = Surrogate.NetworkPathForHost(newactualfilehost) + @"\" + newactualfilename;
{
byte[] smallbuf = new byte[4];
MySpace.DataMining.DistributedObjects.Entry.ToBytes(4, smallbuf, 0);
using (System.IO.FileStream fs = new System.IO.FileStream(myActualFile, System.IO.FileMode.CreateNew, System.IO.FileAccess.Write))
{
fs.Write(smallbuf, 0, 4);
byte[] buf = Encoding.UTF8.GetBytes(Doc.Text);
fs.Write(buf, 0, buf.Length);
}
if (IsNewFile)
{
Console.Write(MySpace.DataMining.DistributedObjects.Exec.Shell(
"DSpace -dfsbind \"" + newactualfilehost + "\" \"" + newactualfilename + "\" \"" + fn + "\" " + DfsFileTypes.NORMAL
+ " -h4"));
}
else
{
string tempdfsfile = fn + Guid.NewGuid().ToString() + dfs.TEMP_FILE_MARKER;
Console.Write(MySpace.DataMining.DistributedObjects.Exec.Shell(
"DSpace -dfsbind \"" + newactualfilehost + "\" \"" + newactualfilename + "\" \"" + tempdfsfile + "\" " + DfsFileTypes.NORMAL
+ " -h4"));
MySpace.DataMining.DistributedObjects.Exec.Shell("DSpace swap \"" + tempdfsfile + "\" \"" + fn + "\"");
MySpace.DataMining.DistributedObjects.Exec.Shell("DSpace delete \"" + tempdfsfile + "\"", true); // suppresserrors=true
}
}
//ActualFile = myActualFile; // Only update this when fully committed to DFS!
IsNewFile = false;
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
MessageBox.Show(this, "Unable to save new file to DFS:\r\n\r\n" + e.Message, "Save-New Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false); // Important! don't continue with any of the rest if this fails!
}
}
Doc.Modified = false; // !
return(true);
}