int count = request.getCount();
byte[] data = request.getData().array();
if (data.length < count) {
WRITE3Response response = new WRITE3Response(Nfs3Status.NFS3ERR_INVAL);
Nfs3Utils.writeChannel(channel, response.writeHeaderAndResponse(
new XDR(), xid, new VerifierNone()), xid);
return;
}
FileHandle handle = request.getHandle();
if (LOG.isDebugEnabled()) {
LOG.debug("handleWrite " + request);
}
// Check if there is a stream to write
FileHandle fileHandle = request.getHandle();
OpenFileCtx openFileCtx = fileContextCache.get(fileHandle);
if (openFileCtx == null) {
LOG.info("No opened stream for fileId:" + fileHandle.getFileId());
String fileIdPath = Nfs3Utils.getFileIdPath(fileHandle.getFileId());
HdfsDataOutputStream fos = null;
Nfs3FileAttributes latestAttr = null;
try {
int bufferSize = config.getInt(
CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_KEY,
CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_DEFAULT);
fos = dfsClient.append(fileIdPath, bufferSize, null, null);
latestAttr = Nfs3Utils.getFileAttr(dfsClient, fileIdPath, iug);
} catch (RemoteException e) {
IOException io = e.unwrapRemoteException();
if (io instanceof AlreadyBeingCreatedException) {
LOG.warn("Can't append file:" + fileIdPath
+ ". Possibly the file is being closed. Drop the request:"
+ request + ", wait for the client to retry...");
return;
}
throw e;
} catch (IOException e) {
LOG.error("Can't apapend to file:" + fileIdPath + ", error:" + e);
if (fos != null) {
fos.close();
}
WccData fileWcc = new WccData(Nfs3Utils.getWccAttr(preOpAttr),
preOpAttr);
WRITE3Response response = new WRITE3Response(Nfs3Status.NFS3ERR_IO,
fileWcc, count, request.getStableHow(),
Nfs3Constant.WRITE_COMMIT_VERF);
Nfs3Utils.writeChannel(channel, response.writeHeaderAndResponse(
new XDR(), xid, new VerifierNone()), xid);
return;
}
// Add open stream
String writeDumpDir = config.get(Nfs3Constant.FILE_DUMP_DIR_KEY,
Nfs3Constant.FILE_DUMP_DIR_DEFAULT);
openFileCtx = new OpenFileCtx(fos, latestAttr, writeDumpDir + "/"
+ fileHandle.getFileId(), dfsClient, iug);
if (!addOpenFileStream(fileHandle, openFileCtx)) {
LOG.info("Can't add new stream. Close it. Tell client to retry.");
try {
fos.close();
} catch (IOException e) {
LOG.error("Can't close stream for fileId:" + handle.getFileId());
}
// Notify client to retry
WccData fileWcc = new WccData(latestAttr.getWccAttr(), latestAttr);
WRITE3Response response = new WRITE3Response(Nfs3Status.NFS3ERR_JUKEBOX,
fileWcc, 0, request.getStableHow(), Nfs3Constant.WRITE_COMMIT_VERF);
Nfs3Utils.writeChannel(channel,
response.writeHeaderAndResponse(new XDR(), xid, new VerifierNone()),
xid);
return;
}
if (LOG.isDebugEnabled()) {