/// <exception cref="System.IO.FileNotFoundException"/>
/// <exception cref="System.IO.IOException"/>
private static void WriteFileToPutRequest(Configuration conf, HttpURLConnection connection
, FilePath imageFile, Canceler canceler)
{
connection.SetRequestProperty(ContentType, "application/octet-stream");
connection.SetRequestProperty(ContentTransferEncoding, "binary");
OutputStream output = connection.GetOutputStream();
FileInputStream input = new FileInputStream(imageFile);
try
{
CopyFileToStream(output, imageFile, input, ImageServlet.GetThrottler(conf), canceler
);
}
finally
{
IOUtils.CloseStream(input);
IOUtils.CloseStream(output);
}
}
/// <exception cref="System.Exception"/>
public Void Run()
{
long txid = parsedParams.GetTxId();
NNStorage.NameNodeFile nnf = parsedParams.GetNameNodeFile();
if (!nnImage.AddToCheckpointing(txid))
{
response.SendError(HttpServletResponse.ScConflict, "Either current namenode is checkpointing or another"
+ " checkpointer is already in the process of " + "uploading a checkpoint made at transaction ID "
+ txid);
return(null);
}
try
{
if (nnImage.GetStorage().FindImageFile(nnf, txid) != null)
{
response.SendError(HttpServletResponse.ScConflict, "Either current namenode has checkpointed or "
+ "another checkpointer already uploaded an " + "checkpoint for txid " + txid);
return(null);
}
InputStream stream = request.GetInputStream();
try
{
long start = Time.MonotonicNow();
MD5Hash downloadImageDigest = TransferFsImage.HandleUploadImageRequest(request, txid
, nnImage.GetStorage(), stream, parsedParams.GetFileSize(), ImageServlet.GetThrottler
(conf));
nnImage.SaveDigestAndRenameCheckpointImage(nnf, txid, downloadImageDigest);
if (metrics != null)
{
long elapsed = Time.MonotonicNow() - start;
metrics.AddPutImage(elapsed);
}
nnImage.PurgeOldStorage(nnf);
}
finally
{
stream.Close();
}
}
finally
{
nnImage.RemoveFromCheckpointing(txid);
}
return(null);
}
/// <exception cref="System.IO.IOException"/>
private void ServeFile(FilePath file)
{
FileInputStream fis = new FileInputStream(file);
try
{
ImageServlet.SetVerificationHeadersForGet(response, file);
ImageServlet.SetFileNameHeaders(response, file);
if (!file.Exists())
{
throw new FileNotFoundException(file.ToString());
}
TransferFsImage.CopyFileToStream(response.GetOutputStream(), file, fis, ImageServlet
.GetThrottler(conf));
}
finally
{
IOUtils.CloseStream(fis);
}
}