/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.nfs.nfs3.response;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.apache.hadoop.nfs.nfs3.Nfs3FileAttributes;
import org.apache.hadoop.nfs.nfs3.Nfs3Status;
import org.apache.hadoop.oncrpc.XDR;
import org.apache.hadoop.oncrpc.security.Verifier;
/**
* READDIR3 Response
*/
public class READDIR3Response extends NFS3Response {
private final Nfs3FileAttributes postOpDirAttr;
private final long cookieVerf;
private final DirList3 dirList;
public static class Entry3 {
private final long fileId;
private final String name;
private final long cookie;
public Entry3(long fileId, String name, long cookie) {
this.fileId = fileId;
this.name = name;
this.cookie = cookie;
}
long getFileId() {
return fileId;
}
String getName() {
return name;
}
long getCookie() {
return cookie;
}
}
public static class DirList3 {
final List<Entry3> entries;
final boolean eof;
public DirList3(Entry3[] entries, boolean eof) {
this.entries = Collections.unmodifiableList(Arrays.asList(entries));
this.eof = eof;
}
}
public READDIR3Response(int status) {
this(status, new Nfs3FileAttributes());
}
public READDIR3Response(int status, Nfs3FileAttributes postOpAttr) {
this(status, postOpAttr, 0, null);
}
public READDIR3Response(int status, Nfs3FileAttributes postOpAttr,
final long cookieVerf, final DirList3 dirList) {
super(status);
this.postOpDirAttr = postOpAttr;
this.cookieVerf = cookieVerf;
this.dirList = dirList;
}
public Nfs3FileAttributes getPostOpAttr() {
return postOpDirAttr;
}
public long getCookieVerf() {
return cookieVerf;
}
public DirList3 getDirList() {
return dirList;
}
@Override
public XDR writeHeaderAndResponse(XDR xdr, int xid, Verifier verifier) {
super.writeHeaderAndResponse(xdr, xid, verifier);
xdr.writeBoolean(true); // Attributes follow
postOpDirAttr.serialize(xdr);
if (getStatus() == Nfs3Status.NFS3_OK) {
xdr.writeLongAsHyper(cookieVerf);
for (Entry3 e : dirList.entries) {
xdr.writeBoolean(true); // Value follows
xdr.writeLongAsHyper(e.getFileId());
xdr.writeString(e.getName());
xdr.writeLongAsHyper(e.getCookie());
}
xdr.writeBoolean(false);
xdr.writeBoolean(dirList.eof);
}
return xdr;
}
}