/// <summary>
/// Called to open the file.
/// </summary>
/// <param name="node">The node that represents the file.</param>
/// <param name="sessionID">The unique session ID.</param>
protected void Open(BaseFileNode node, string sessionID)
{
SetupFileNames(node, sessionID);
Log.log.Debug("Opening File {0} (OutFile Open)", file);
try
{
FileInfo fi = new FileInfo(file);
if (Store.IsEnterpriseServer || fi.Length > (1024 * 100000))
{
workStream = new StreamStream(File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read));
workFile = null;
}
else
{
// This file is being pushed make a copy to work from.
File.Copy(file, workFile, true);
File.SetAttributes(workFile, FileAttributes.Normal);
workStream = new StreamStream(File.Open(workFile, FileMode.Open, FileAccess.Read));
}
}
catch (FileNotFoundException e1)
{
// got an exception - mostly File not found
Log.log.Info("IOException for file {2} \n.{0}--{1}, setting Stream to NULL", e1.Message, e1.StackTrace, file);
workStream = null;
workFile = null;
}
}
/// <summary>
/// Called to close the file and cleanup.
/// </summary>
/// <param name="InFinalizer">true if called from the finalizer.</param>
private void Close(bool InFinalizer)
{
if (!InFinalizer)
{
GC.SuppressFinalize(this);
}
if (workStream != null)
{
workStream.Close();
workStream = null;
}
// We need to delete the temp file.
if (workFile != null)
{
File.Delete(workFile);
}
}
/// <summary>
/// Called to cleanup any resources and close the file.
/// </summary>
/// <param name="InFinalizer"></param>
/// <param name="commit"></param>
private SyncNodeStatus Close(bool InFinalizer, bool commit)
{
if (!InFinalizer)
{
GC.SuppressFinalize(this);
}
SyncNodeStatus status = new SyncNodeStatus();
status.nodeID = node.ID;
status.status = SyncStatus.ClientError;
if (stream != null)
{
stream.Close();
stream = null;
}
if (workStream != null)
{
workStream.Close();
workStream = null;
}
if (commit)
{
// backup file for rolling back on failure
string tmpFile = "";
if (File.Exists(file))
{
tmpFile = file + ".~stmp";
File.Move(file, tmpFile);
Log.log.Info("backing up {0}->{1}", file, tmpFile);
}
// first try to write the file
try
{
Log.log.Info("trying to move {0}->{1}", workFile, file);
File.Move(workFile, file);
workFile = null;
}
catch
{
Log.log.Info("Couldn't move {0}->{1}", workFile, file);
Log.log.Info("Restoring file {0}", file);
try {
if (File.Exists(file))
{
File.Delete(file); // delete newly transferred file
}
if (File.Exists(tmpFile))
{
File.Move(tmpFile, file); // restore backup file into place
}
}
catch (Exception ex)
{
Log.log.Info("couldn't return to prior state{0}--{1}", ex.Message, ex.StackTrace);
};
// DELETE HASHMAP ?
throw; // and don't try to commit
}
// try to collection.commit()
status.status = SyncStatus.Success;
try
{
Log.log.Info("trying to commit collection");
collection.Commit(node);
}
catch (CollisionException ce)
{
commit = false;
status.status = SyncStatus.UpdateConflict;
Log.log.Info("Couldn't commit collection: UpdateConflict {0}--{1}", ce.Message, ce.StackTrace);
}
catch (Exception ex)
{
commit = false;
status.status = SyncStatus.ServerFailure;
Log.log.Info("Couldn't commit collection {0}--{1}", ex.Message, ex.StackTrace);
}
/* Note : Restore original file if collection.Commit fails.
* Conflict is a valid case for failure. And do not remove
* files in workarea as they are needed for conflict resolution. */
if (!commit && status.status != SyncStatus.UpdateConflict)
{
try {
Log.log.Debug("Collection commit failed : Restoring backup file : {0}", file.ToString());
// Delete newly transferred file
if (File.Exists(file))
{
File.Delete(file);
Log.log.Debug("-- Deleting file : {0}", file.ToString());
}
// Restore backup file into place
if (File.Exists(tmpFile))
{
File.Move(tmpFile, file);
Log.log.Debug("-- Restoring {0} to {1}", tmpFile.ToString(), file.ToString());
}
// Fixme : Delete hashmap ?
}
catch (Exception ex)
{
Log.log.Info("File restore failed : Couldn't return to prior state {0}--{1}", ex.Message, ex.StackTrace);
};
}
else // commit successful, delete the temporary (.~stmp) file.
{
try
{
// restore backup file into place
if (File.Exists(tmpFile))
{
File.Delete(tmpFile);
}
}
catch (Exception ex)
{
Log.log.Info("problem deleting .~stmp file {0}--{1}", ex.Message, ex.StackTrace);
};
}
if (commit)
{
FileInfo fi = new FileInfo(file);
fi.LastWriteTime = node.LastWriteTime;
fi.CreationTime = node.CreationTime;
if (oldNode != null)
{
// Check if this was a rename.
// If the old path does not equal the new path
// Delete the old file.
string oldPath = oldNode.GetFullPath(collection);
try
{
Log.log.Info("{0} may have been moved to {1}", file, oldPath);
if (MyEnvironment.Windows)
{
if (string.Compare(oldPath, file, true) != 0)
{
File.Delete(oldPath);
}
}
else
{
if (oldPath != file)
{
File.Delete(oldPath);
}
}
}
catch {};
}
}
}
// We need to delete the temp file if we are the master.
// On the client leave for a delta sync.
if (workFile != null)
{
if (collection.Role == SyncRoles.Master || (collection.Role == SyncRoles.Slave && File.Exists(file)))
{
File.Delete(workFile);
}
}
if (partialFile != null)
{
File.Delete(partialFile);
}
return(status);
}
/// <summary>
/// Called to open the file.
/// </summary>
/// <param name="node">The node that represents the file.</param>
protected void Open(BaseFileNode node)
{
SetupFileNames(node, "");
CheckForNameConflict();
Log.log.Debug("Opening File {0} (InFile Open)", file);
// Open the file so that it cannot be modified.
oldNode = collection.GetNodeByID(node.ID) as BaseFileNode;
try
{
if (!NameConflict)
{
stream = File.Open(file, FileMode.Open, FileAccess.Read, FileShare.None);
}
}
catch (FileNotFoundException)
{
Log.log.Debug("file {0} not found", file);
// Check to see if we have a partially downloaded file to delta sync with.
if (collection.Role == SyncRoles.Slave && File.Exists(workFile))
{
if (File.Exists(partialFile))
{
File.Delete(partialFile);
}
partialFile = workFile + ".part";
try
{
File.Move(workFile, partialFile);
}
catch (Exception e)
{
try
{
Log.log.Debug("could not move the file, so copy/deleting the source file: {0}. Message: {1} stack: {2}", workFile, e.Message, e.StackTrace);
File.Copy(workFile, partialFile);
File.Delete(workFile);
}
catch
{
File.Delete(workFile);
Log.log.Debug("exception while copying workfile so deleted.");
//throw e;
}
}
if (File.Exists(partialFile))
{
stream = File.Open(partialFile, FileMode.Open, FileAccess.Read, FileShare.None);
}
Log.log.Debug("file {0} opened", partialFile);
}
else if (oldNode != null)
{
// The file may have been renamed.
string oldPath = oldNode.GetFullPath(collection);
if (oldPath != file)
{
stream = File.Open(oldPath, FileMode.Open, FileAccess.Read, FileShare.None);
Log.log.Debug("file {0} opened", oldPath);
isServerFileRenamed = true;
}
}
else
{
Log.log.Debug("file not {0} opened", file);
}
}
catch (IOException e1)
{
try
{
string Fullpath = file;
string rootNode = collection.GetRootDirectory().GetFullPath(collection);
rootNode = Path.GetDirectoryName(rootNode);
int rootPathLength = rootNode.Length;
//int fullPathLength = Fullpath.Length;
string Relativepath = Fullpath.Substring(rootPathLength);
//Relative Path excluding FileName
Relativepath = Path.GetDirectoryName(Relativepath);
//bool pathExists = false;
bool pathCreated = false;
//Array of relative parth directory
char[] delimiterList = { '/' };
string[] dirArray = Relativepath.Split(delimiterList);
string tempPath = rootNode;
//Maintaining progressive relative path, starting from root
string FsPath = null;
//List of node matching the Search criteria
ICSList nodeList = null;
foreach (string dir in dirArray)
{
if (FsPath != null)
{
//Creating incremental path, starting form Parent, excluding system path
FsPath = Path.Combine(FsPath, dir);
}
else
{
FsPath = dir;
//Initilizing if atleast on directory exist
pathCreated = true;
}
//Creating incremental path, including system path
tempPath = Path.Combine(tempPath, dir);
//Verify if Directory exists, starting for root parent
if (!System.IO.Directory.Exists(tempPath))
{
//Verify if directory node exisit, then only create actual directory
nodeList = collection.Search(PropertyTags.FileSystemPath, FsPath, SearchOp.Equal);
if (nodeList != null)
{
//Create directory as Node exist
System.IO.Directory.CreateDirectory(tempPath);
}
else
{
pathCreated = false;
Log.log.Debug("Node doesn't exist for path:{0}", FsPath);
//As parent node doesn't exist, no need to iterate for child
break;
}
}
}
if (pathCreated == true)
{
Log.log.Debug("Final path created is :{0}", tempPath);
}
}
catch (Exception excep)
{
Log.log.Info("Exception while re-creating missing directory: message {0}-- stacktrace:{1}", excep.Message, excep.StackTrace);
}
//throw below exception to log the failure
Log.log.Info("IOException.{0}--{1}. The file is already open by some other thread.", e1.Message, e1.StackTrace);
throw;
}
// Create the file in the parent directory and then move to the work area.
// This will insure that the proper attributes are set.
// This was added to support EFS (Encrypted File System).
string createName = Path.Combine(Path.GetDirectoryName(file), Path.GetFileName(workFile));
FileStream tmpStream = File.Open(createName, FileMode.Create, FileAccess.ReadWrite, FileShare.None);
if (File.Exists(workFile))
{
File.Delete(workFile);
}
// Make sure we have enough space for the file.
try
{
tmpStream.SetLength(node.Length);
tmpStream.Close();
tmpStream = null;
#if MONO
if (MyEnvironment.Unix)
{
if (node.Properties.GetSingleProperty(SyncFile.ModeProperty) != null)
{
// Get the posix mode flags for the file.
Stat sStat;
if (Syscall.stat(createName, out sStat) == 0)
{
// Now or in the execute bit and set it on the file.
FilePermissions fp = sStat.st_mode | FilePermissions.S_IXUSR;
Syscall.chmod(createName, fp);
}
}
}
#endif
File.Move(createName, workFile);
}
catch (IOException)
{
if (tmpStream != null)
{
tmpStream.Close();
}
throw new InsufficientStorageException();
}
workStream = new StreamStream(File.Open(workFile, FileMode.Truncate, FileAccess.ReadWrite, FileShare.None));
}
