WriteStableHow stableHow = request.getStableHow();
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 fileId: " + handle.getFileId() + " offset: "
+ offset + " length:" + count + " stableHow:" + stableHow.getValue());
}
// Check if there is a stream to write
FileHandle fileHandle = request.getHandle();
OpenFileCtx openFileCtx = openFileMap.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 (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());
addOpenFileStream(fileHandle, openFileCtx);
if (LOG.isDebugEnabled()) {
LOG.debug("opened stream for file:" + fileHandle.getFileId());
}
}
// Add write into the async job queue
openFileCtx.receivedNewWrite(dfsClient, request, channel, xid,
asyncDataService, iug);
// Block stable write
if (request.getStableHow() != WriteStableHow.UNSTABLE) {
if (handleCommit(fileHandle, offset + count)) {
Nfs3FileAttributes postOpAttr = getFileAttr(dfsClient, handle, iug);
WccData fileWcc = new WccData(Nfs3Utils.getWccAttr(preOpAttr),
postOpAttr);
WRITE3Response response = new WRITE3Response(Nfs3Status.NFS3_OK,
fileWcc, count, request.getStableHow(),
Nfs3Constant.WRITE_COMMIT_VERF);
Nfs3Utils.writeChannel(channel, response.writeHeaderAndResponse(
new XDR(), xid, new VerifierNone()), xid);
} else {
WRITE3Response response = new WRITE3Response(Nfs3Status.NFS3ERR_IO);
Nfs3Utils.writeChannel(channel, response.writeHeaderAndResponse(
new XDR(), xid, new VerifierNone()), xid);
}
}
return;
}