public void clean()
{
while (true)
{
if (DBTransferManager.getManager(null) != null)
{
doCleanup();
}
const int MIN = 60, SEC = 1000;
System.Threading.Thread.Sleep(2 * MIN * SEC);
}
}
public static DBTransferManager getManager(DBServer srv)
{
if (instance == null)
{
if (srv == null)
{
return(null);
}
else
{
instance = new DBTransferManager(srv);
}
}
return(instance);
}
private void doCleanup()
{
lock (activeLocks)
{
List <String> dropKey = new List <String>();
foreach (String key in activeLocks.Keys)
{
Lock l = activeLocks[key];
if (l.isWriteLock)
{
if (l.lockCreation.AddMinutes(W_TIMEOUT).CompareTo(new DateTime()) < 0)
{
if (DBTransferManager.getManager(null).abortDownload(key))
{
dropKey.Add(key);
//activeLocks.Remove(key);
}
else
{
l.lockCreation = l.lockCreation.AddMinutes(W_TIMEOUT);
}
}
}
else
{
if (l.lockCreation.AddMinutes(R_TIMEOUT).CompareTo(new DateTime()) < 0)
{
dropKey.Add(key);
//((ILocks)(this)).releaseReadLock(key);
//activeLocks.Remove(key);
}
}
} //forEach
ILocks ilock = (ILocks)this;
foreach (string s in dropKey)
{
Lock l = activeLocks[s];
if (l.isWriteLock)
{
ilock.releaseWriteLock(s);
}
else
{
ilock.releaseReadLock(s);
}
}
} //lock
}
private string doUpload(string line)
{
if (!isLoggedIn())
{
return(MESSAGES.ERR);
}
long filesize, timestamp;
string md5, oldmd5;
try
{
line = fetchLong(line, out timestamp, ' ');
line = fetchString(line, out md5, ' ');
line = fetchLong(line, out filesize, ' ');
}
catch (Exception)
{
return(MESSAGES.ERR);
}
try
{
line = fetchString(line, out oldmd5, ' ');
}
catch (ArgumentException)
{
Console.WriteLine("no old hash");
oldmd5 = null;
}
String[] tokens = line.Split(path_sep);
if (tokens.Length != 2)
{
return(MESSAGES.ERR);
}
String containerName = tokens[0];
String path = tokens[1];
//String lengthStr = tokens[2];
// no longer need to reject files of zero size
if (filesize > DBServer.MAX_FILE_SIZE)
{
return(MESSAGES.E_BADFILESIZE);
}
/*
* if (md5.Length != MD5LENGTH)
* {
* Console.WriteLine("md5length fail, this is nyi");
* //return MESSAGES.ERR;
* }*/
if (timestamp < 0)
{
return("ERR_TIMESTAMP_TOO_OLD");
}
DateTimeOffset fileStamp = new DateTimeOffset(new DateTime(timestamp, DateTimeKind.Utc));
//new DateTimeOffset()
/*
* if (fileStamp.CompareTo(new DateTimeOffset().AddMinutes(5)) > 0)
* {
* return "ERR_TIMESTAMP_IN_FUTURE";
* }*/
Services.UPLOAD_INFO f = new Services.UPLOAD_INFO();
f.username = this.loggedInUsername;
//f.path = containerName + ":" + path;
f.path = line;
f.sz = filesize;
f.utcTime = fileStamp;
f.curHash = md5;
f.prevHash = oldmd5;
f.absPath = makeAbsPath(f.username, f.path);
try
{
DBTransferManager mgr = DBTransferManager.getManager(srv);
string key = mgr.getDownloadKey(f);
if (srv.getLocks().acquireWriteLock(f.absPath))
{
Console.WriteLine("Acquired global write lock");
return(MESSAGES.OK + " " + key);
}
else
{
mgr.revokeKey(key);
Console.WriteLine("Global write lock was denied");
return(MESSAGES.E_LOCK);
}
}
catch (Exception e)
{
//details not settled yet
if (e is DBLikeExceptions.UnauthorizedAccessException)
{
return(MESSAGES.E_NOACCESS);
}
if (e is DBLikeExceptions.CloudContainerNotFoundException)
{
return(MESSAGES.E_NOFOLDER);
}
if (e is DBLikeExceptions.HashConflictException)
{
return(MESSAGES.E_CONFLICT);
}
Console.WriteLine(e);
return(MESSAGES.ERR);
}
}
