public static void DeleteFile(string dfsfile)
{
if (dfsfile.StartsWith("dfs://", StringComparison.OrdinalIgnoreCase))
{
dfsfile = dfsfile.Substring(6);
}
ValidateDfsProtocolDfsFileName(dfsfile);
FastXml fx;
List<string> oldfilenodepaths;
using (LockDfsMutex())
{
fx = new FastXml(ReadDfs_unlocked(DfsDir + @"\dfs.xml"));
{
int filestart, fileend;
if (!DfsFindFile(fx, dfsfile, out filestart, out fileend))
{
throw new Exception("File not found in DFS: " + dfsfile);
}
oldfilenodepaths = GetFileNodePaths(fx, filestart, fileend);
fx.Replace(filestart, fileend, "");
{
string metabackupdir = null;
metabackupdir = fx.GetTagInnerText("MetaBackup");
if (null != metabackupdir && 0 == metabackupdir.Length)
{
metabackupdir = null;
}
WriteDfsXml_unlocked(fx.ToString(), DfsDir + @"\dfs.xml", metabackupdir);
}
}
}
MySpace.DataMining.Threading.ThreadTools<string>.Parallel(
new Action<string>(
delegate(string chunkpath)
{
try
{
System.IO.File.Delete(chunkpath);
System.IO.File.Delete(chunkpath + ".zsa");
}
catch
{
}
}), oldfilenodepaths);
}
public static void SetFileContent(string dfsfile, string dfsfiletype, byte[] content, int contentlength)
{
if (dfsfile.StartsWith("dfs://", StringComparison.OrdinalIgnoreCase))
{
dfsfile = dfsfile.Substring(6);
}
ValidateDfsProtocolDfsFileName(dfsfile);
FastXml fx;
using (LockDfsMutex())
{
fx = new FastXml(ReadDfs_unlocked(DfsDir + @"\dfs.xml"));
}
string[] slaves = fx.GetTagInnerText("SlaveList").Split(';');
int replfactor;
if (!int.TryParse(fx.GetTagInnerText("Replication"), out replfactor))
{
replfactor = 1;
}
string dfsfilexml = WriteDfsFileContent(dfsfile, dfsfiletype, content, contentlength, slaves, replfactor);
List<string> oldfilenodepaths = null;
using (LockDfsMutex())
{
fx = new FastXml(ReadDfs_unlocked(DfsDir + @"\dfs.xml"));
int fstart, fend;
if (DfsFindFile(fx, dfsfile, out fstart, out fend))
{
oldfilenodepaths = GetFileNodePaths(fx, fstart, fend);
fx.Replace(fstart, fend, dfsfilexml);
}
else
{
if (fx.FindTag("Files", out fstart, out fend))
{
fx.AppendChild(fstart, fend, dfsfilexml);
}
else
{
if (fx.FindTag("dfs", out fstart, out fend))
{
fx.AppendChild(fstart, fend, "<Files>" + dfsfilexml + "</Files>");
}
else
{
throw new Exception("Corrupt DFS.XML: dfs root tag not found");
}
}
}
{
string metabackupdir = null;
metabackupdir = fx.GetTagInnerText("MetaBackup");
if (null != metabackupdir && 0 == metabackupdir.Length)
{
metabackupdir = null;
}
WriteDfsXml_unlocked(fx.ToString(), DfsDir + @"\dfs.xml", metabackupdir);
}
}
if (null != oldfilenodepaths)
{
MySpace.DataMining.Threading.ThreadTools<string>.Parallel(
new Action<string>(
delegate(string chunkpath)
{
try
{
System.IO.File.Delete(chunkpath);
System.IO.File.Delete(chunkpath + ".zsa");
}
catch
{
}
}), oldfilenodepaths);
}
}
