/// <summary>
/// Copies the file at the given path to the server, which could be anywhere from
/// the local machine to a remote one.
/// </summary>
/// <param name="virtualPath">The virtual path.</param>
public void CopyToServer(VirtualPath virtualPath)
{
var fromFullPath = _pathFactory.CreateShadwoFullPath4Write(virtualPath);
byte[] infoBytes = _serverProxy.Get(new Uri("/BitTorrent/Info"));
var infoObj = XmlUtil.FromXml<BitTorrentServiceInfo>(
Encoding.UTF8.GetString(infoBytes));
if (infoObj.ServerCacheUri.IsLoopback) {
// Server on the same machine, we copy from file system.
var relativePath = virtualPath.PathString.Substring(
virtualPath.PathString.IndexOf(Path.DirectorySeparatorChar, 1));
var toFullPath = UriUtil.CombinePaths(infoObj.ServerCacheUri.LocalPath,
new Uri(relativePath, UriKind.Relative));
IOUtil.PrepareParentDirForPath(toFullPath);
if (SysEnvironment.OSVersion == OS.Unix) {
// In case of Unix, we actually use symbolic link instead of copying.
var symlink = new UnixSymbolicLinkInfo(toFullPath);
Logger.WriteLineIf(LogLevel.Verbose, _log_props, string.Format(
"Creating Symlink: {0} -> {1}", toFullPath, fromFullPath.PathString));
// Linking toPath to fromPath == Copy fromPath to toPath.
symlink.CreateSymbolicLinkTo(fromFullPath.PathString);
} else {
throw new NotImplementedException("Only Unix hosts are currently supported.");
}
} else {
throw new NotImplementedException("Only local machine is currently supported.");
}
}
public OpenFileInfo(IntPtr fileHandle, VirtualPath virtualPath,
VirtualFile virtualFile, FileAccess fileAccess)
{
_fileHandle = fileHandle;
_virtualPath = virtualPath;
_virtualFile = virtualFile;
_fileAccess = fileAccess;
}
public ShadowFullPath CreateShadowFullPath(VirtualPath vp, FilesysOp op)
{
if (op == FilesysOp.Read) {
return new ShadowMetaFullPath(_shadowDirPath, vp);
} else {
return new ShadowFullPath(_shadowDirPath, vp);
}
}
/// <summary>
/// Gets the length of the physical file which is read from the virtual file.
/// </summary>
/// <param name="virtualPath">The virtual path to the virtual file.</param>
/// <returns>The file size.</returns>
public long GetFileLength(VirtualPath virtualPath)
{
var shadowPath = _pathFactory.CreateShadowFullPath4Read(virtualPath);
if (File.Exists(shadowPath.PathString)) {
var vf = XmlUtil.ReadXml<VirtualFile>(shadowPath.PathString);
return vf.FileSize;
} else {
throw new ArgumentException("Virtual file not exists.");
}
}
internal ShadowMetaFullPath(string shadowDirPath, VirtualPath vp)
: base(Path.Combine(shadowDirPath, MetaDirName), vp)
{
}
internal ShadowFullPath(string shadowDirPath, VirtualPath vp)
: base(Path.Combine(shadowDirPath, vp.PathString.TrimStart(
Path.DirectorySeparatorChar)))
{
}
/// <summary>
/// Updates the file size in virtual file.
/// </summary>
void UpdateFileSizeInVirtualFile(VirtualPath vp)
{
ShadowFullPath readPath = _pathFactory.CreateShadowFullPath4Read(vp);
ShadowFullPath writePath = _pathFactory.CreateShadwoFullPath4Write(vp);
var virtualFile = XmlUtil.ReadXml<VirtualFile>(readPath.PathString);
// Get the size from the real file.
long fileSize = new FileInfo(writePath.PathString).Length;
virtualFile.FileSize = fileSize;
XmlUtil.WriteXml<VirtualFile>(virtualFile, readPath.PathString);
}
/// <summary>
/// Creates a virtual file with the Physical location information in it.
/// </summary>
/// <param name="vp">The vp.</param>
VirtualFile CreateAndWriteVirtualFile(VirtualPath vp)
{
ShadowFullPath readPath = _pathFactory.CreateShadowFullPath4Read(vp);
ShadowFullPath writePath = _pathFactory.CreateShadwoFullPath4Write(vp);
var virtualFile = new VirtualFile() {
PhysicalUri = new Uri(writePath.PathString)
};
IOUtil.PrepareParentDirForPath(readPath.PathString);
XmlUtil.WriteXml<VirtualFile>(virtualFile, readPath.PathString);
Logger.WriteLineIf(LogLevel.Verbose, _log_props,
string.Format("A virtual file is created at {0}", readPath.PathString));
return virtualFile;
}
/// <summary>
/// Reads the virtual file from the specified path.
/// </summary>
/// <param name="path">The path.</param>
/// <returns></returns>
public VirtualFile ReadVirtualFile(VirtualPath path)
{
var shadowPath = _pathFactory.CreateShadowFullPath4Read(path);
if (File.Exists(shadowPath.PathString)) {
var vf = XmlUtil.ReadXml<VirtualFile>(shadowPath.PathString);
return vf;
} else {
// This is an erroneous situation where you think the file exists but no virtual file
// presents.
throw new Exception();
}
}
public ShadowFullPath CreateShadwoFullPath4Write(VirtualPath vp)
{
return CreateShadowFullPath(vp, FilesysOp.Write);
}
public ShadowFullPath CreateShadowFullPath4Read(VirtualPath vp)
{
return CreateShadowFullPath(vp, FilesysOp.Read);
}
internal ShadowMetaFullPath(string shadowDirPath, VirtualPath vp)
: base(Path.Combine(shadowDirPath, MetaDirName), vp)
{
}
internal ShadowFullPath(string shadowDirPath, VirtualPath vp)
: base(
Path.Combine(shadowDirPath, vp.PathString.TrimStart(
Path.DirectorySeparatorChar)))
{
}
