/**
 * 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.request;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

import org.apache.hadoop.nfs.nfs3.FileHandle;
import org.apache.hadoop.oncrpc.XDR;

/**
 * RENAME3 Request
 */
public class RENAME3Request extends NFS3Request {
  private final FileHandle fromDirHandle;
  private final String fromName;
  private final FileHandle toDirHandle;
  private final String toName;
  
  public static RENAME3Request deserialize(XDR xdr) throws IOException {
    FileHandle fromDirHandle = readHandle(xdr);
    String fromName = xdr.readString();
    FileHandle toDirHandle = readHandle(xdr);
    String toName = xdr.readString();
    return new RENAME3Request(fromDirHandle, fromName, toDirHandle, toName);
  }
  
  public RENAME3Request(FileHandle fromDirHandle, String fromName,
      FileHandle toDirHandle, String toName) {
    this.fromDirHandle = fromDirHandle;
    this.fromName = fromName;
    this.toDirHandle = toDirHandle;
    this.toName = toName;
  }
  
  public FileHandle getFromDirHandle() {
    return fromDirHandle;
  }

  public String getFromName() {
    return fromName;
  }

  public FileHandle getToDirHandle() {
    return toDirHandle;
  }

  public String getToName() {
    return toName;
  }

  @Override
  public void serialize(XDR xdr) {
    fromDirHandle.serialize(xdr);
    xdr.writeInt(fromName.getBytes(StandardCharsets.UTF_8).length);
    xdr.writeFixedOpaque(fromName.getBytes(StandardCharsets.UTF_8));
    toDirHandle.serialize(xdr);
    xdr.writeInt(toName.getBytes(StandardCharsets.UTF_8).length);
    xdr.writeFixedOpaque(toName.getBytes(StandardCharsets.UTF_8));
  }
}