/// <summary>
/// delegato che inserisce il file in questione nell'appropriato hashSet
/// </summary>
/// <param name="fi"></param>
private void checkFile(System.IO.FileInfo fi)
{
//MyLogger.add(fi.Name + "\n");
RecordFile thisFile = new RecordFile(fi);
if (fi.Length == 0)
{
return;
}
FileStatus status = dim.UpdateStatus(thisFile);
switch (status)
{
case FileStatus.New:
MyLogger.print("nuovo: ");
newFiles.Add(thisFile);
MyLogger.print(fi.Name + "\n");
break;
case FileStatus.Updated:
MyLogger.print("aggiornato: ");
updatedFiles.Add(thisFile);
MyLogger.print(fi.Name + "\n");
break;
case FileStatus.Old:
MyLogger.debug("vecchio: ");
MyLogger.debug(fi.Name + "\n");
//nothing to do
break;
}
//MyLogger.add(thisFile);
}
//~DirImageManager()
//{
// storeDirImage();
//}
/// <summary>
/// Verify if the RecordFile passed is new/updated/old by comparing with the last calculated state of the directory.
/// Can't return deleted files. Use getDeleted() at the end of all the updates.
/// </summary>
/// <param name="rf"></param>
/// <returns></returns>
public FileStatus UpdateStatus(RecordFile rf)
{
if (!Updating)
{
Updating = true;
//crea elenco dei deleted pieno inizialmente
//deletedRecord = new Dictionary<string, RecordFile>(dirImage);
deletedFileNames = new HashSet<string>(dirImage.Keys);
}
//cerca tra i già presenti
RecordFile match;
if (dirImage.TryGetValue(rf.nameAndPath, out match))
{
//se lo trovi elimina la voce dalla lista dei deletedFiles
deletedFileNames.Remove(rf.nameAndPath);
//RecordFile newRf = new RecordFile(rf);
if (rf.Equals(match))
//i due file sono identici, non cambio nulla
return FileStatus.Old;
else
//è aggiornato
dirImage.Remove(rf.nameAndPath);
//dirImage.Add(rf.nameAndPath, rf); add è fatto solo tramite ConfirmSync (quando ho finito di sincronizzarlo con il server)
return FileStatus.Updated;
}
else
{
//se non lo trovi è new
//aggiungilo a DirImage
//dirImage.Add(rf.nameAndPath, rf); add è fatto solo tramite ConfirmSync (quando ho finito di sincronizzarlo con il server)
return FileStatus.New;
}
}
public RecordFile(RecordFile rf)
{
this.nameAndPath = rf.nameAndPath;
this.hash = rf.hash;
this.size = rf.size;
this.lastModified = rf.lastModified;
}
public void toSendFormatTest()
{
RecordFile rf = new RecordFile("C:\\ciao.txt", "abcdefghabcdefghabcdefghabcdefgh", 15, new DateTime(1970, 1, 1, 1, 0, 0));
string s = rf.toSendFormat();
string rs = "C:\\ciao.txt\r\n00000000000Fabcdefghabcdefghabcdefghabcdefgh0000000000000000\r\n";
Assert.AreEqual(s, rs);
}
// aggiunge i recordFile e la sua versione alle RecoverInfos eliminando eventuali
// ripetizioni di recordFile (stesso nome && stesso hash && stessa ultima mod).
// poichè la stessa versione dello stesso file può comparire più volte sul server
//con numero di backup diverso,
// la addRecoverRecord mantiene una sola entry in questo caso, la prima che riceve.
private void addRecoverRecord(RecordFile rf, int backupVersion)
{
lock (this)
{
recInfos.Add(new RecoverRecord(rf, backupVersion));
BackupVersionNumbers.Add(backupVersion);
}
}
internal void confirmSync(RecordFile rf, bool deleting)
{
if (!deleting)
{
dirImage.Add(rf.nameAndPath, rf);
}
else
{
dirImage.Remove(rf.nameAndPath);
}
}
internal void syncNewFiles(RecordFile rf)
{
MyLogger.debug("newing file: " + rf.nameAndPath);
sendToServer(commNewFile);
waitForAck(commCmdAckFromServer);
//aspettare eventuale MISS_BCK o BACKUPOK
if (strRecCommFromServer() == commBackupOkFromServer)
{
SendWholeFileToServer(rf);
MyLogger.debug("newed\n");
}
else
{
throw new AckErrorException();
}
}
//però se ho tutto uguale e solo la lastModified diversa dovrei considerarla la stessa????
//forse non dovrei avere la lastModified in memoria?
public override bool Equals(object obj)
{
RecordFile r = obj as RecordFile;
if (r == null)
{
return(false);
}
if (nameAndPath.Equals(r.nameAndPath) &&
hash.Equals(r.hash) &&
//size.Equals(r.size) && il size può essere a -1
lastModified.Equals(r.lastModified))
{
return(true);
}
return(false);
}
private void SendWholeFileToServer(RecordFile rf)
{
int tryes = 0;
while (tryes < 6)
{
//invio info del file
sendToServer(rf.toSendFormat());
//check ack
string resp = strRecCommFromServer();
if (resp != commInfoAckFromServer)
{
if (resp == commSndAgain)
{
tryes++;
continue;
}
else
{
throw new AckErrorException();
}
}
//invio contenuto del file
sendFileContent(rf);
//check ack
resp = strRecCommFromServer();
if (resp != commDataAck)
{
if (resp == commSndAgain)
{
tryes++;
continue;
}
else
{
throw new AckErrorException();
}
}
break;
}
}
private void sendFileContent(RecordFile f)
{
try
{
const int bufsize = 1024;
var buffer = new byte[bufsize];
int actuallyRead = 0;
long sizeFile = 0;
long totalBytesRead = 0;
long nextStep = 0;
long stepSize;
using (var s = File.OpenRead(f.nameAndPath))
{
sizeFile = s.Length;
stepSize = (long)Math.Ceiling((double)sizeFile / 10);
while ((actuallyRead = s.Read(buffer, 0, bufsize)) > 0)
{
serverStream.Write(buffer, 0, actuallyRead);
//aggiorna progress bar
totalBytesRead += actuallyRead;
if (totalBytesRead > nextStep)
{
mainWindow.Dispatcher.BeginInvoke(mainWindow.DelSetProgressValues, sizeFile, 0, totalBytesRead);
nextStep += stepSize;
}
}
}
serverStream.Flush();
mainWindow.Dispatcher.BeginInvoke(mainWindow.DelSetProgressValues, sizeFile, 0, sizeFile);
}
catch (Exception ex)
{
MyLogger.debug(ex.ToString());
MyLogger.print("errore leggendo il file");
throw;
}
}
internal void syncDeletedFile(RecordFile rf)
{
MyLogger.debug("deleting file: " + rf.nameAndPath);
sendToServer(commDeleteFile);
waitForAck(commCmdAckFromServer);
sendToServer(rf.nameAndPath);
waitForAck(commInfoAckFromServer);
MyLogger.debug("deleted\n");
string res = strRecCommFromServer();
if (res == commDELETED)
{
MyLogger.debug("deleted\n");
}
if (res == commNOTDEL)
{
MyLogger.debug("file inesistente.\n");
}
}
//~DirImageManager()
//{
// storeDirImage();
//}
/// <summary>
/// Verify if the RecordFile passed is new/updated/old by comparing with the last calculated state of the directory.
/// Can't return deleted files. Use getDeleted() at the end of all the updates.
/// </summary>
/// <param name="rf"></param>
/// <returns></returns>
public FileStatus UpdateStatus(RecordFile rf)
{
if (!Updating)
{
Updating = true;
//crea elenco dei deleted pieno inizialmente
//deletedRecord = new Dictionary<string, RecordFile>(dirImage);
deletedFileNames = new HashSet <string>(dirImage.Keys);
}
//cerca tra i già presenti
RecordFile match;
if (dirImage.TryGetValue(rf.nameAndPath, out match))
{
//se lo trovi elimina la voce dalla lista dei deletedFiles
deletedFileNames.Remove(rf.nameAndPath);
//RecordFile newRf = new RecordFile(rf);
if (rf.Equals(match))
{
//i due file sono identici, non cambio nulla
return(FileStatus.Old);
}
else
{
//è aggiornato
dirImage.Remove(rf.nameAndPath);
}
//dirImage.Add(rf.nameAndPath, rf); add è fatto solo tramite ConfirmSync (quando ho finito di sincronizzarlo con il server)
return(FileStatus.Updated);
}
else
{
//se non lo trovi è new
//aggiungilo a DirImage
//dirImage.Add(rf.nameAndPath, rf); add è fatto solo tramite ConfirmSync (quando ho finito di sincronizzarlo con il server)
return(FileStatus.New);
}
}
internal void syncUpdatedFile(RecordFile rf)
{
MyLogger.debug("updating file: " + rf.nameAndPath);
sendToServer(commUpdFile);
waitForAck(commCmdAckFromServer);
//aspettare eventuale MISS_BCK o BACKUPOK
if (strRecCommFromServer() == commBackupOkFromServer)
{
SendWholeFileToServer(rf);
MyLogger.debug("updated\n");
}
else
throw new AckErrorException();
}
internal void syncDeletedFile(RecordFile rf)
{
MyLogger.debug("deleting file: " + rf.nameAndPath);
sendToServer(commDeleteFile);
waitForAck(commCmdAckFromServer);
sendToServer(rf.nameAndPath);
waitForAck(commInfoAckFromServer);
MyLogger.debug("deleted\n");
string res = strRecCommFromServer();
if (res == commDELETED)
{
MyLogger.debug("deleted\n");
}
if (res == commNOTDEL)
{
MyLogger.debug("file inesistente.\n");
}
}
/// <summary>
/// return true se ricezione corretta, false altrimenti
/// </summary>
/// <param name="fout">already opened output fileStream</param>
/// <returns>last modify date of the file</returns>
private System.DateTime RecFileContent(string FileNameAndPath, FileStream fout)
{
//ricezione hash
byte[] hashReceived = new byte[32];
var count = serverStream.Read(hashReceived, 0, 32);
string strHash = System.Text.Encoding.UTF8.GetString(hashReceived);
//remove \r\n
socketReadline();
//legge dimensione del file
long sizeFile = Convert.ToInt64(socketReadline(), 16);
//legge data_ultima_modifica file
var lmfile = MyConverter.UnixTimestampToDateTime(Convert.ToInt64(socketReadline(), 16));
//data_rec
sendToServer(commDataRec);
int attempt = 0;
do
{
//ricezione e salvataggio su disco.
var buffer = new byte[1024];
int bytesRead;
long totalBytesRead = 0;
fout.Seek(0, SeekOrigin.Begin);
//step della progress bar
long stepSize = (long)Math.Ceiling((double)sizeFile / 10);
long nextStep = 0;
do
{
bytesRead = serverStream.Read(buffer, 0, buffer.Length);
fout.Write(buffer, 0, bytesRead);
totalBytesRead += bytesRead;
//aggiorna progress bar
if (totalBytesRead > nextStep)
{
mainWindow.recoverW.Dispatcher.BeginInvoke(mainWindow.recoverW.DelSetRecProgressValues, sizeFile, 0, totalBytesRead);
nextStep += stepSize;
}
}while (totalBytesRead < sizeFile);
mainWindow.recoverW.Dispatcher.BeginInvoke(mainWindow.recoverW.DelSetRecProgressValues, sizeFile, 0, sizeFile);
if (totalBytesRead != sizeFile)
{
sendToServer(commSndAgain);
attempt++;
if (attempt < 5)
{
continue;
}
else
{
break;
}
}
//calcolo e confronto hash
var computedHash = RecordFile.calcHash(FileNameAndPath, fout);
if (computedHash == strHash)
{
sendToServer(commDataAck);
return(lmfile);
}
else
{
sendToServer(commSndAgain);
attempt++;
}
}while (attempt < 5);
MyLogger.print("errore nel download del file. impossibile effettuare il ripristino.\n");
//todo: catchare questa eccezione nelle funzioni chiamanti
throw new CancelFileRequestException();
}
public RecoverRecord(RecordFile rf, int backupVersion)
{
this.rf = rf;
this.backupVersion = backupVersion;
}
public RecordFile(RecordFile rf)
{
this.nameAndPath = rf.nameAndPath;
this.hash = rf.hash;
this.size = rf.size;
this.lastModified = rf.lastModified;
}
internal void confirmSync(RecordFile rf, bool deleting)
{
if (!deleting)
dirImage.Add(rf.nameAndPath, rf);
else
dirImage.Remove(rf.nameAndPath);
}
internal void confirmSync(RecordFile f, bool deleting = false)
{
dim.confirmSync(f, deleting);
//dim.storeDirImage(); non salvo + niente online
}
/// <summary>
/// delegato che inserisce il file in questione nell'appropriato hashSet
/// </summary>
/// <param name="fi"></param>
private void checkFile(System.IO.FileInfo fi)
{
//MyLogger.add(fi.Name + "\n");
RecordFile thisFile = new RecordFile(fi);
if (fi.Length == 0)
return;
FileStatus status = dim.UpdateStatus(thisFile);
switch (status)
{
case FileStatus.New:
MyLogger.print("nuovo: ");
newFiles.Add(thisFile);
MyLogger.print(fi.Name + "\n");
break;
case FileStatus.Updated:
MyLogger.print("aggiornato: ");
updatedFiles.Add(thisFile);
MyLogger.print(fi.Name + "\n");
break;
case FileStatus.Old:
MyLogger.debug("vecchio: ");
MyLogger.debug(fi.Name + "\n");
//nothing to do
break;
}
//MyLogger.add(thisFile);
}
internal void confirmSync(RecordFile f, bool deleting = false)
{
dim.confirmSync(f, deleting);
//dim.storeDirImage(); non salvo + niente online
}
private void sendFileContent(RecordFile f)
{
try
{
const int bufsize = 1024;
var buffer = new byte[bufsize];
int actuallyRead = 0;
long sizeFile = 0;
long totalBytesRead = 0;
long nextStep = 0;
long stepSize;
using (var s = File.OpenRead(f.nameAndPath))
{
sizeFile = s.Length;
stepSize = (long)Math.Ceiling((double)sizeFile / 10);
while ((actuallyRead = s.Read(buffer, 0, bufsize)) > 0)
{
serverStream.Write(buffer, 0, actuallyRead);
//aggiorna progress bar
totalBytesRead += actuallyRead;
if (totalBytesRead > nextStep)
{
mainWindow.Dispatcher.BeginInvoke(mainWindow.DelSetProgressValues, sizeFile, 0, totalBytesRead);
nextStep += stepSize;
}
}
}
serverStream.Flush();
mainWindow.Dispatcher.BeginInvoke(mainWindow.DelSetProgressValues, sizeFile, 0, sizeFile);
}
catch (Exception ex)
{
MyLogger.debug(ex.ToString());
MyLogger.print("errore leggendo il file");
throw;
}
}
private void SendWholeFileToServer(RecordFile rf)
{
int tryes = 0;
while (tryes < 6)
{
//invio info del file
sendToServer(rf.toSendFormat());
//check ack
string resp = strRecCommFromServer();
if (resp != commInfoAckFromServer)
{
if (resp == commSndAgain)
{
tryes++;
continue;
}
else
{
throw new AckErrorException();
}
}
//invio contenuto del file
sendFileContent(rf);
//check ack
resp = strRecCommFromServer();
if (resp != commDataAck)
{
if (resp == commSndAgain)
{
tryes++;
continue;
}
else
{
throw new AckErrorException();
}
}
break;
}
}
public void getJustNameTest()
{
RecordFile rf = new RecordFile("C:\\cartella\\prova\\ciao.txt", "abcdefghabcdefghabcdefghabcdefgh", 15, new DateTime(1970, 1, 1, 1, 0, 0));
Assert.AreEqual("ciao.txt", rf.getJustName());
}
