| /** |
| * 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.nio.ByteBuffer; |
| |
| 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; |
| |
| /** |
| * READ3 Response |
| */ |
| public class READ3Response extends NFS3Response { |
| private final Nfs3FileAttributes postOpAttr; |
| private final int count; // The real bytes of read data |
| private final boolean eof; |
| private final ByteBuffer data; |
| |
| public READ3Response(int status) { |
| this(status, new Nfs3FileAttributes(), 0, false, null); |
| } |
| |
| public READ3Response(int status, Nfs3FileAttributes postOpAttr, int count, |
| boolean eof, ByteBuffer data) { |
| super(status); |
| this.postOpAttr = postOpAttr; |
| this.count = count; |
| this.eof = eof; |
| this.data = data; |
| } |
| |
| public Nfs3FileAttributes getPostOpAttr() { |
| return postOpAttr; |
| } |
| |
| public int getCount() { |
| return count; |
| } |
| |
| public boolean isEof() { |
| return eof; |
| } |
| |
| public ByteBuffer getData() { |
| return data; |
| } |
| |
| public static READ3Response deserialize(XDR xdr) { |
| int status = xdr.readInt(); |
| xdr.readBoolean(); |
| Nfs3FileAttributes postOpAttr = Nfs3FileAttributes.deserialize(xdr); |
| int count = 0; |
| boolean eof = false; |
| byte[] data = new byte[0]; |
| |
| if (status == Nfs3Status.NFS3_OK) { |
| count = xdr.readInt(); |
| eof = xdr.readBoolean(); |
| int len = xdr.readInt(); |
| assert (len == count); |
| data = xdr.readFixedOpaque(count); |
| } |
| |
| return new READ3Response(status, postOpAttr, count, eof, |
| ByteBuffer.wrap(data)); |
| } |
| |
| @Override |
| public XDR serialize(XDR out, int xid, Verifier verifier) { |
| super.serialize(out, xid, verifier); |
| out.writeBoolean(true); // Attribute follows |
| postOpAttr.serialize(out); |
| |
| if (getStatus() == Nfs3Status.NFS3_OK) { |
| out.writeInt(count); |
| out.writeBoolean(eof); |
| out.writeInt(count); |
| out.writeFixedOpaque(data.array(), count); |
| } |
| return out; |
| } |
| } |