/// <exception cref="System.IO.IOException"/>
private void OnGetFileChecksum(ChannelHandlerContext ctx)
{
MD5MD5CRC32FileChecksum checksum = null;
string nnId = @params.NamenodeId();
DFSClient dfsclient = NewDfsClient(nnId, conf);
try
{
checksum = dfsclient.GetFileChecksum(path, long.MaxValue);
dfsclient.Close();
dfsclient = null;
}
finally
{
IOUtils.Cleanup(Log, dfsclient);
}
byte[] js = Sharpen.Runtime.GetBytesForString(JsonUtil.ToJsonString(checksum), Charsets
.Utf8);
DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HttpVersion.Http11, HttpResponseStatus
.Ok, Unpooled.WrappedBuffer(js));
resp.Headers().Set(HttpHeaders.Names.ContentType, ApplicationJsonUtf8);
resp.Headers().Set(HttpHeaders.Names.ContentLength, js.Length);
resp.Headers().Set(HttpHeaders.Names.Connection, HttpHeaders.Values.Close);
ctx.WriteAndFlush(resp).AddListener(ChannelFutureListener.Close);
}
/// <exception cref="Javax.Servlet.ServletException"/>
/// <exception cref="System.IO.IOException"/>
protected override void DoGet(HttpServletRequest request, HttpServletResponse response
)
{
PrintWriter @out = response.GetWriter();
string path = ServletUtil.GetDecodedPath(request, "/getFileChecksum");
XMLOutputter xml = new XMLOutputter(@out, "UTF-8");
xml.Declaration();
ServletContext context = GetServletContext();
DataNode datanode = (DataNode)context.GetAttribute("datanode");
Configuration conf = new HdfsConfiguration(datanode.GetConf());
try
{
DFSClient dfs = DatanodeJspHelper.GetDFSClient(request, datanode, conf, GetUGI(request
, conf));
MD5MD5CRC32FileChecksum checksum = dfs.GetFileChecksum(path, long.MaxValue);
MD5MD5CRC32FileChecksum.Write(xml, checksum);
}
catch (IOException ioe)
{
WriteXml(ioe, path, xml);
}
catch (Exception e)
{
WriteXml(e, path, xml);
}
xml.EndDocument();
}
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Org.Apache.Hadoop.FS.UnresolvedLinkException"/>
public override FileChecksum GetFileChecksum(Path f)
{
return(dfs.GetFileChecksum(GetUriPath(f), long.MaxValue));
}